Mayors of cities and others directly responsible for aiding and abetting criminals, providing them safe haven, can be held accountable for the crimes those criminals perpetrate. Several politicians are now pushing legislation to ensure this happens. Case in point, having made the decision to be a Sanctuary City, officials released the violent repeat criminal illegal offender instead of obeying federal guidelines/laws and handing him over to federal officials. Instead they released the PO$, and he killed *Katie not long ago.
One could easil argue, since the BROKE FEDERAL LAW, they could be arrested and charged with aiding and abetting...if anyone had the desire or testicular fortitude to do so. I personally hope Katie's parents not only sue the city and the police but also file criminal charges against the mayor and chief of police, pushing this issue up the legal system/courts.