That's actually pretty much common knowledge with experts studying people flows and emergency evacuations.
If you're interested in the subject The New Yorker has a fascinating read on the subject (CRUSH POINT - When large crowds assemble, is there a way to keep them safe? [2011]) which makes this argument. (Warning! It's long)
If you're interested in the subject The New Yorker has a fascinating read on the subject (CRUSH POINT - When large crowds assemble, is there a way to keep them safe? [2011]) which makes this argument. (Warning! It's long)