Are we showing support for cops that enforce unconstitutional gun laws, man roadblocks/checkpoints, and arrest folks for possession of a plant? Or just showing support for the "good" cops? Not sure how much law and order I want to endorse, to be honest...
If you're not comfortable with it, then don't. It's a pretty simple equation.
You can support police officers for doing a dangerous and difficult job, while still working to change laws you feel are improper. They're not mutually-exclusive positions. But then, there is plenty of support for you to join the "defund the police" side if that's the way you feel.