The only successful trickle down effect I know of is anger. It's starts with one, and smashes into another, whom then turns on someone you never would have thought.
My second period is debate. It should be the one class I walk into that everyone can push their emotions aside and have a civil discussion. It was the only class I walked into today where multiple people yelled, cussed, pouted, and made blatantly false allegations to make their points superior. This was all in the two minutes before the tardy bell rang.
>Has a guy with that horse-mask thing as an avatar
smh