Ignore them. I've had more issues with dbzer0 users than from any other instance. They are clearly attacking you then when you try to defend yourself they try to use that against you.
Really, this all started because you just were trying to think of the person behind the badge, while acknowledging that cops are still bastards. But, because you didn't use the right phrasing they are vilifying you. It's crazy that you're literally being attacked because you're trying to empathize with another human, as if that's a bad thing.