I think DD is expressing his frustration that basically the police can pull you over on any pretense. You may be proven right later, but only after a lot of hassle.
"Welfare Check" may be common practice...but it is my opinion that it is against the law & more importantly a violation of the Bill of Rights. I don't like it, and I don't agree with it. And, I will speak out against unlawful stops and detainment. At least when I get old and find myself under rule of dictatorship, I will be able to say I did not stand silent, I resisted and attempted to educate those around me. This is how I see it.
They came first for the Communists,
and I didn't speak up because I wasn't a Communist.
Then they came for the trade unionists,
and I didn't speak up because I wasn't a trade unionist.
Then they came for the Jews,
and I didn't speak up because I wasn't a Jew.
Then they came for me
and by that time no one was left to speak up.