Cameras are rolling all the time, and if something happens, the live feeds will pick it up and fans will immediately put it on Twitter.
There’s also no way for producers to quietly bury misbehavior either.
Some controversy is always good, of course, but there’s a big difference between a fight or a shomance that causes the audience to invest more and something that makes viewers more uncomfortable, like when contestants have gotten in trouble for alleged racism in the past.
There are many reality shows on television which require contestants to live together, but between the mix of people put into the house together and the fact that it takes place over an entire summer, there always seems to be more of these controversies that pop up on Big Brother.