Domestically like the “lucky bags” example: “egg rush” events in the USA around Easter, where kids & parents line up around a field filled with fully visible candy-filled plastic eggs, and on a signal all race madly to scoop up as many of the freebies as they can. The vision is innocent children delightedly picking up brightly colored items filled with sweets in a symbolic expression of the joy of life given by Spring and Resurrection, but instead manifests as parents angrily shoving others to grab as much as they can and children crying as other faster-moving elders take the delights first in a grotesque antithesis to what Easter is about.
Don’t forget the crowds or mobs that descend on Wal Mart (especially) every Thanksgiving night to get in on Christmas shopping sales. I do recall people have died because of these events.