Realistically it will happen but not across the board, it happening overtly and in pockets however isn't just possible but likely to the point of there being a few running battles before things are done...

Cornered animals are unpredictable and the people behind the cleanup are certainly smart enough to have prepared for it, but by it's very nature such things are messy and difficult to guarantee containment of so it will spill over and have unintended/unwanted/unfortunate consequences that will spill over and affect civilians in a overt and public/impossible to hide way.

Even if it will be in spots and spread out it is likely to happen and happen for a while in locations that may not always be that easy to predict...