Why are we so tolerant towards intolerance?

A few weeks ago the case of a horrible and coward beat-up towards a young man in his 20s by other 4 guys who attacked him as, according to them, he "deserved" it for not being a "real man"  for being homosexual, led Daniel Zamudio towards his grave a lot sooner than he was meant to leave this world. After this incident, it has become quite common in the internet and in the news that people judge this 4 guys who ambushed him as being the only ones who were not "real men" in this story but, is this true at all? what about all the bystanders who could have done anything to help this guyin this dirty and unfair situation but decided to walk away thinking only in their own safety? could these people be called "real men"?

Most of us would jump into danger recklessly if a relative or a close friend is being attacked, then why can we stay so calm when a stranger is going through the same situation we all deep inside acknowledge as unfair easily? why do we take it so differently if the person who is being bullied or attacked for being different isn't someone we know? and, would we like to receive the same "treatment" if we were in that person shoes? would we like to see as lots of people just look away when we really need a helping hand? In cases like Zamudio's it's not like any person could just get into the fight pretending to be Bruce Lee or something like that and face the 4 attackers head on, but just calling the police (or at least warning that they will if the attackers don't stop their behaviour) would be a great help. It's not playing to be a hero, it's just understanding that if you were in the shoes of someone who is being attacked unfairly you would like to be helped too.

Lately it's very common to hear about the importance of tolerance, but the thing is that we are becoming more tolerant to some really wrong things: we are still intolerant to people of different ethnicies, religions, sexual tendencies, and even music styles or football teams, but we really cope well with people who abuse others in such ways like it happened in this case, so my question is. Why are we so tolerant towards intolerance?

By Raúl Rodríguez.