Doing exactly what is needed to get change to happen when the cops are murdering children in traffic stops by shooting them in the head and then lying about it at every single level of power is good actually.
When the state refuses to provide justice people should absolutely take it. The threat of the population taking their own justice is precisely what motivates states to provide a source of it that they control.
I strongly recommend you actually watch what happened.
Imperialism does not mean “of empire”. It is an economic system, the highest stage of capitalism.