The following video is a perfect example of what happens when you gather a group of people who have way too much time on their hands, no brains, and little respect for the property of others.
On June 30, 2009 ("Don't Buy Into Apartheid Day"- yep, it exists), in the San Francisco Bay Area (and elsewhere), pro-Palestinian/anti-Israeli activists, members of Global BDS Movement (Boycott, Divestment and Sanctions for Palestine) trekked on over to various Trader Joe's and proceeded to vandalize all Israeli-made products. In this particular location, the feeble Trader Joe's employees basically did nothing to deter the idiots from plastering stickers on the food, other than threaten to call the police. At the beginning, they also asked them to stop filming, although they continued to videotape their antics for 6 minutes or so.
Of course, they bandied about the whole Israel is an apartheid state, which is ludicrous, and to which I devoted a whole post to.
I wish I had been there!
WARNING: The video has an annoyance-factor of 10+.