It also means you can fuck their spouse as long as you don't hit them...
On a more serious note, though, while I do 100% that the "Thin Blue Line" is pure idiocy, I don't think that actually going out of your way to harass them (even if it is warranted) is in any way effective in convincing them otherwise and having them see reason. Same reasoning as with why many young boys these days fall down the alt-right rabbit hole and become a Tater Tot.
A counter example is Richard Spencer, the Nazi, getting punched in public twice and then saying in an interview that he's afraid to go out in public. He faded from the limelight soon thereafter.
Okay, that is pretty effective, but you would also swoop down to the same low as them. The police are known for unreasonable and excessive brutality, doing that would make you at the same level they are.
EDIT: You have convinced me and bought to my attention points that I didn't consider because I might have been too idealistic. Thank you for correcting me.
It's not unreasonable or excessive to respond violently to oppression.
Oh yeah, you're right, I agree. My bad, didn't really think of that for a sec.
If the worst thing Nazis did was go around sporadically punching people, they would not be the universal byword for evil.
Going around trying to exterminate people makes you as low as the Nazis. Going around punching Nazis makes you a damn sight better.
My point isn’t to convince them. It’s to make it a pain to display such ideas in public