1.) My parents were always yelling at my little brothers, "Hey kids! Stop that roughhousing!" Other colorful words usually accompanied these demands, but I'm saving those for another OP.
roughhouse verb: gerund or present participle: roughhousing: act in a boisterous, violent manner. "in front of the stage hundreds of teens and young adults roughhouse, flinging themselves into each other"
PS - In more or less the same vein there is, "grab-assing"; i.e., The boss was furious because his employees were always grab-assing instead of working.
2.) The crowd of people in the second picture are "jostling" for with each other to get into a better position to receive whatever those goodies are that are being handed-out to the crowd.
jostle verb: gerund or present participle: jostling: to push, elbow, or bump against (someone) roughly, typically in a crowd. "passengers arriving and departing, jostling one another"; "jostled by the crowd"
synonyms: bump into/against, knock into/against, bang into, collide with, plow into, jolt;
• struggle, vie, jockey, scramble, crowd one another. "media empires jostle to catch the eye of Asian readers and viewers"
• struggle or compete forcefully for. "a jumble of images jostled for attention"