I think there is no problem with 911 as long as you aren't complaining about the traffic or how your sandwich was not made the way you ordered it.
I had a girlfriend call 911 after a bill collector, looking for me, yelled at her and threatened her. They couldn't do anything, took a report, but it made her feel better.
Just did a google search for "Blue Light Rapist". Found this on snopes:
http://www.snopes.com/crime/warnings/fakecop.aspThe number to call is an urban legend, kind of. The Blue Light Rapist isn't. Read it. I'd just dial 911.
wrongway