https://wtop.com/dc/2020/08/after-41-arrested-in-adams-morgan-last-week-prosecutors-decline-to-bring-charges-in-most-cases/
Take aways:
1) Rioters face little to no consequences for their actions
2) The prosecutors Office wants as much distance between this decision to not prosecute and themselves as possible.
3) If you commit crimes that are politically chic (like destroying neighborhoods) then you will get away with it.