Police misconduct (I assume this is what the meme is referencing) doesn't justify stealing and destroying private citizens private property. Protesting is one thing, destroying an unrelated person's livelihood is another and that is not ok.

Destruction of property justifying killing people: this depends on the situation. If some kids bash your mailbox, obviously it's not ok to shoot them. If someone is breaking into your house then you have every right to defend yourself and your family, you don't know what this person intends or is capable of.

I don't think this is related to capitalism though.