Crushing people with tanks
Just a heads up, while it is established that the CCCP killed tons of people on that day, the idea that people were crushed with tanks is disputed in academia and mostly considered inaccurate news reporting.
The famous “tank man” photo shows a guy standing in front of a tank in order to prevent them from moving tanks to another part where the protesters had gone. We have no evidence that he was driven over by that tank.
That photo (I’ve seen it circulate on the internet myself) is a photoshop. Every reputable source says that no one knows what happened to that man, and we have no evidence whatsoever of him getting run over.