Facebook face-palmers

I'm a calm person in this way, nothing really can anger me so much. So I don't feel the need to unfriend people. But there are some friends who are sometimes acting so dumb and rude on facebook that I ask how people like this can exist :D, but I laugh about their low-lifeness and overall stupidity. Last time a girl was having a tirada against gay guys just because one gay guy was hitting on his boyfriend. Girl, it's not like it's written on the guy that "Reserved for Julie" (fake name here), and that gay guy isn't a psychic to know immediately that the guy he likes is a hetero and has a girlfriend... I don't know why she took it as a personal insult. And then, or a whole day, anti.gay pics and jokes all around my newsfeed... Not to talk about those soccer/football-fanatic guys who are in principle huuuuge friends, but when it's soccer season, and they cheer for opposite teams, after a match they can talk so rude to each other, badmouthing everyone from their friend to the referee and the footballers and argue about whether which team was better, and how the match was rigged... it's just curse after curse... someone needs to weash their mouthes with soap. Oh, and there was this guy, who got fed up with everyone's obsession with my country's X Factor and he told that we are stupid for watching this and it's rigged and how it makes people dumb to watch this... and months later he's talking about who did what in a local Big Brother-like lowlife reality show? What? You think X-Factor is for dummies, and then you watch and love a reality show about exchitionistic and narcistic, but dumb as hell people living together and arguing about pointless things??? People can be so dumb.