I was just reading about some environmental protestors outside the first minister's residence in Edinburgh. They're doing a Halloween protest with lots of pumpkins, it seems quite nice.
Of course, it's safer to inconvenience the public than someone who will call the police and get you removed, or even jailed, even if the law supposedly protects both activities equally; but going to jail for their activism has never been new for actual activists.
Ask yourself: Am I willing to get arrested for my ideals? If not, it's just performance, and you'd better find something more fulfilling to do.