They're probably right. People who play guitars and drums and bodhrans are probably terrorists, too. The night after the Rodney King riots in Los Angeles in 1992, my son decided to set up his punk rock band on the top level of a parking garage in downtown Sacramento. They drew an audience of about 125. Soon, the garage was surrounded by cops in riot gear.
The newspaper said that people in the audience were throwing bottles at the police, but my son said that it looked to him more like simple littering.
Still, it was a pretty stupid thing for my kid to do.

-Joe-