I'm going to yell at a homeless beggar
Are you serious? Why would you yell at a homeless person who is asking for money?
I just think he's begging for too much money.
You do not know what they are going through. I think that you should show them more kindness instead of yelling at them about what you think that you know.
Why shouldn't I yell at him? He can't do anything to me anyway.
You shouldn't yell at him because it's not right to treat someone like that, especially someone who is probably going through a very hard time. If you don't like what he's doing, just move along. There's no reason to be so confrontational.