I am deeply critical of this line of thought. There are so many negative consequences of properties destruction and looting that counterweight the benefits.
As far as I am concerned this is an argument that only someone that did not have a riot outside of their own house can espouse.
I apologize for the hyperbole of that argument, but it is something that I would personally say to everyone condoning the destruction, the looting, and the violence; even knowing that in some instances I will be wrong.
I a couple of months there will be one less evil cop around and also quite few stores destroyed, livelihood evaporated, family savings lost, destroyed buildings in historically minority and poor neighborhoods.
Once the dust settles hundreds of people will be in far worse conditions that they would have been otherwise AND those will not be the protesters, those will be the people, families, kids, that had the protest happen around them.