Losing All Hope Was Freedom (or LAHWF) is a project (with an associated YouTube channel) devoted to breaching experiments (“an experiment that seeks to examine people’s reactions to violations of commonly accepted social rules or norm”). It takes a certain bravery to engage in these experiments, say going into an elevator and facing the back wall, to see what others will do. It also hopefully requires some ethical examination; some of these experiments come off more as pranks and can disturb people (honestly, I’m not impressed with Improv Everywhere because they needlessly perturb strangers for our bemusement).
With that in mind, here are their two latest videos, where they sneak up on people and casually take their hands. Compare the experimenter and the environment between the first and second video, and look at your own reactions to the reactions they gather. The second one, for sure, is worth watching all the way through.