Be careful on that slippery slope.
There is no slippery slope here. When a group organized around a behavior (an immoral behavior at that) attempts to hijack the morals of a country and compel the rest of the citizens to bow down and honor their behavior, we have every responsibility to stand up and say...enough. Stop it. If the cops help us push back, I commend the effort. And, no, I am not afraid of them. Stay this side of such activity and you face almost no danger of having a bad encounter.
After all, you do this every day with some behaviors and not with others. Pray tell, whence did you acquire this right and not fall down a “slippery slope”?