I’ll cut against the grain here and say it’s ABSOLUTELY appropriate for taxpayers to pay the bill here. It’s pretty toxic that people don’t want to take responsibility for their own government in a democracy. In this case, it’s especially bad, given the sheriff is elected by the people directly. But I’d go even further and say even where control is less direct, we need incentives for voters to take this stuff serious…
Taxpayers should get a line item on their tax bills that specifically counts the amount of their bill that went toward settlements arising out of police misconduct, so they can see in numeric terms what they're voting for.
If citizens had granular voting power (i.e. liquid democracy), this would make more sense. As it stands you get to vote for team red or team blue once in a while and hope that their votes impact that line item you’re concerned about.