This is an issue from Iran that happens in these last elections, when supposedly a candidate won the city of Trabz, in Iran, but these elections were stolen.
This is something that happens recently and apparently it caused lots of disorders in the city, people became violent, burning and throwing fire to buildings, universities, and stuff from the city, in order to get the attention, that there is a problem, and it must have been stooped and resolved.

The picture above is showing what happened.