Southwest and United cram six more seats on their flights to increase profits. That is at a loss of one inch of space on each row. American added 10 seats on 737-800s increasing the number of passengers to 160. And Delta shrunk the toilet to gain 4 more seats (as if the toilets weren't small enough).
So this does not sit well with the passengers who must go through security gauntlets, fight for the limited space in the overhead bins and otherwise be herded like cattle.
So, everyone must remain calm.