I got pulled over one time for flashing my lights to warn about a cop that was hiding. It’s legal in my state to do that, and I knew that. He asked a bunch of questions and then let me go.
I never knew that that was a warning. I always wondered why oncoming drives would flick their lights. Apparently I’m the only one who didn’t know, cuz autocorrect practically wrote previous sentence.
I short..the cop stopped you to harass you and intimidate you. Yet another reason to not back the blue.