Our local coffee shop has a sign over the pissoir. It reads...
"Please consider our neighbours when you leave. Minimise the noise.
Harley riders, this does apply to you, too."
Furthermore, I'm annoyed. When I got knocked back on a roadworthy because my exhaust was 6Db too loud, I pointed out that most HD's were louder, he said "Yeah, I know. But they're Harley's". Grrr!