It wouldn’t pertain to the Detroit situation but some of the outages in suburban and rural areas are sometimes due to utilities cutting back on tree maintenance to save money and sometimes cutting back because homeowners complain about having street trees trimmed. Both reasons are short sighted.
Malgus,concerning your hypothesis, I’ve noticed the uptick in black on white crime too but I doubt someone hit the Detroit power grid in response. Corruption and ineptitude in Detroit govt. seems a more obvious reason.