By other people not doing anything about it or standing up when they see it. It's because there's to much silence and everyone looks the other way and the bullies know it

I don't know exactly, but there is a chemical in the male's brain that causes them to have that mentality. Girls can act that way too, but not as fiercely as guys. That's why guy's compete more fiercely than girls and can be more violent. I just heard this, I don't exactly know where, but it would be interesting to research, let us know if you find anything :)

When I see people behaving those ways - arrogant, self absorbed, macho, bully - it makes me think that person is hurt, scared, insecure, unintelligent, or weak. Or just very young.

I have a twenty year old son, and there are times when he can behave in a very self-absorbed way. I've never seen him act arrogant, macho, or like a bully, thankfully, but I've definitely seen him behave in a way which makes him look very young and selfish because he doesn't stop to consider how his actions and choices could affect others around him. When my husband and I see him behaving this way, we carefully point it out to him and talk to him about it. I just feel this is something that he will grow out of. I see a lot of young people who behave this way. My husband behaved this way when he was young, and thankfully he grew out of it! :)

Maybe people who never "grow out of it" are people who didn't have parents or friends who helped them to see how they were behaving, or who enabled their bad behavior, and so they never "grew up" or changed.

People are assholes these days. A lot of them have very low self-esteem and try to make it better by dragging others down with them. It's really stupid. There are a lot of gender roles that a guy feels like he has to fill, and for whatever reason, being a bitch fills them for the person. I really don't understand it, but I hope this helped!

I honestly have no clue where that mentality came from. I think it continues because these people aren't taught differently when they are children. They don't know any different, so nothing changes. I'm not sure if this will ever change, as it's been around for a long time.

Sometimes the guys get their personalities from their fathers. So like if their father is a bully and arrogant than his child will be too and so forth. Boys pick on those who they perceive as weaker than them; which to most are females. Everyone looks the other way so no one knows how wrong it really is.

Its a form of immaturity i think. Stuck in a child's response pattern.

Real men don't bully. Plain and simple.

That mentality comes from watching how others behave - either their fathers, or from other role models in their lives (whether it be t.v. characters, friends, or whoever). These guys see that their role models get rewarded somehow for this behavior, by somehow getting what they want (stuff, women, submission from their victims, whatever). Nobody steps in to teach them to behave differently, and on top of that, they generally don't develop an ability to feel empathy, so they don't care if they hurt others.
That's my observance and opinion, anyway.

That sounds like someone who may be a narcaccist.

These types are actually the weakest type of person. They have to talk down to everybody else and sort of create this alternate reality where they are supreme in every way.

The reason they act this way is simply because they cannot accept the reality of who they really are. They have to focus everything on everyone else's flaws so that no one gets close to theirs.

After a while some of these people get very good a bullying as a defense mechanism.

I tend to agree; bullying acts as a defence mechanism for some. For others, it's a way to relieve their own pain and stress. Those who bully, generally tend to be unhappy with their own lives. Otherwise -- why, feel the need to bully in the first place?

My best advice is, ignore all those who bully. Nobody should have the power to make you feel bad about yourself.