As anyone who has ever visited Israel knows, soldiers take civilian buses all the time. These brave, brave militants prefer to shoot at civilian targets rather than take their chances with attacking a bona fide military target. Before you call me a fascist, etc., I should say that I support a Palestinian state - and every attack like this makes that less likely.
Palestinian man suffers light wounds from rocks thrown by Jewish men in Jerusalem (Haaretz)
from the article: Seven killed in series of terrorist attacks in southern Israel