They were pushed ...
... with inside art reminding me of the lemming story behind Disney's 1958 nature doc White Wilderness :
""film makers eager for dramatic footage staged a lemming death plunge pushed dozens of lemmings off a cliff while cameras were rolling. The images—shocking at the time for what they seemed to show about the cruelty of nature and shocking now for what they actually show about the cruelty of humans—convinced several generations of moviegoers that these little rodents do in fact possess a bizarre instinct to destroy themselves." (Britannica)
And so a myth was born.