yep. the whole "chalta hein" attitude needs to die.
(I don't mean any offence, please don't take it that way, just trying to understand the terms and attitude ypu refer to.)
In fact, I could swear I've heard the phrase "I'm gonna let this walk for now" as in "I'm gonna let this infraction pass unpunished" in American English in a movie or something, but Google doesn't seem to be throwing up too many references for that. But you could imagine it in the same way too, as "let it walk".