This is the way, inconvenience the people responsible, not your fellow citizens. Block the robot company's street, not you main street.
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.