Ok, here it goes.
I went out of my house at like 6:20 and went to the place where i would meet up with my friends to join the protest. One of them was still in class so we ended up joining the protest really late (at like…7:50 i guess?) so the four of us went to find another friend that went ahead and was already in El Zócalo (downtown). We walked all the way through Reforma (one of the main streets that goes straight to El Zócalo). So far so good, People looked hopeful but a little sad. Signs were everywhere.
We arrived at downtown and my friend wasn't where she said she would be with her husband (well, we were an hour late after all). We called her and she told us she was near the downtown and that we should go find her. We decided to enter through one of the side streets to El Zócalo. We started to walk and a lot of people were already leaving. Two streets in and i felt a horrible sinking thing in my gut. The mood in the air had changed for the worst. I felt really bad. A lot of negative feelings were in the air. So much you could almost feel them. I waved my hand in front of me as if i could touch them. I told my friends about it and we kept walking. In the next street there were suspicious people and a two large gatherings who were looking at the second floor of a building where guys in black were looking at them. A few steps after, the police were closing the metro stations and wouldn't let people in. It was a little weird. We kept walking.
In the next street (they are short streets) we found our friend with her husband and another friend. We didn't understand why they weren't feeling bad. The Feeling in the air was horrible. They wanted to go closer to El Zócalo. We took yet another side streeet (Donceles) to move forward. But when we were walking towards Donceles (the other side street) i couldn't resist anymore. I told them: "Something is terribly wrong". Another friend of mine confirmed it. She was also feeling bad.
Donceles was empty. "There is a lot of people in here. It doesn't make any sense for Donceles to be empty. We should leave" i told them and everyone agreed. While we were walking i realized. They were directing the people to 5 de mayo and Tacuba. In those streets there wouldn't be as much cameras as in Madero who is the main access. That way they wouldn't have to worrry of being caught in tape. It felt like a mouse trap. I kept feeling really bad and something inside of me told me i should scream. Should warn everybody of the danger. But i kept quiet. Maybe i was being paranoid and causing chaos in this kind of gathering would be a tragedy. We just kept walking away from El Zócalo.
We were like 5 streets aways and we started to feel safe. Our friend that arrived early decided to call it a day. One of our friends was hungry so we decided to go to a restaurant. We chose one that was kinda far from the El Zócalo but it's still downtown. We entered and ordered something. Just then my friend checked his phone. Police had entered and evacuated El Zócalo with tear gas. Also police was detaining and beating people in the streets (just were we had been in fact). We couldn't go out or they would detain us or worse. The restaurant was the only thing between us and the police.
Edit 2: So we had to stay at the restaurant. They had boarded the windows everywhere so they wouldn't destroy them with rocks. We were protected but we couldn't see what was happening outside. I saw that we weren't the only ones. A lot of costumers were dressed in black (people proposed that we should all dress in black. My friends did. I couldn't find clean clothes so went in white) and they all had worried looks on their faces. In facebook people were sharing photos of people being beaten, some being shot with rubber bullets and more. It was our only way of knowing what was happening outside. I asked friends in facebook to let me know if it was safe for us to leave. They told me to keep still. Suddenly the restaurant turned the volume up. The music started to sound so loud. Loud enough for us to not hear what was happening outside. But we had Facebook. We knew what was happening. And we started to be afraid. Not just me and my friend but everyone in the restaurant. Silent night (you know, the christmas jingles) was playing inside. Outside people were screaming but we couldn't hear them. When one song ended we managed to hear a patrol speeding by. It was hell.
Half an hour in we finished eating. We were debating whether to go out or not. After much discussion we went to peek outside. They had shut the doors. Whatever it was. The restaurant didn't want to let us go. My friend said it was hell. Knowing what was happening outside but had to listen to pseudo-soothing music inside. It was.
After like an hour and a half (i can't really tell how much fear, paranoia, sadness and anger we felt). They finally let us go. Before we went out we made some preparations. I told my friends to hide their school id (Being a student in a Protest in México is no good). Check if our cellphones had enough charge so if any of us got detained we could film it and upload it to the web (a way of documenting it and guaranteeing at least the life of the one being detained). We didn't but we didn't have any other choice. We got out and walked through Reforma so we could take a cab. We saw two buses full of police going to El Zócalo. It wasn't over...but what could we do? If we tried to make an uproar it would have been the end of us. We were just rats trying to get home and not get squished. We were already far from El Zócalo but we didn't feel safe. I still feel afraid. Not for me but for a lot of people that is right now in custody. And we were close. really close. A few minutes more and maybe...well.
And sorry if this sounded too dramatic but i guess i wrote what i felt. Tomorrow i'll try to bring english sources on all that happened.