Dear lord... don't believe everything on the internet!
I've worked at rodeos (mostly sorting the breakaway, tie down, and bull dogging steers), and I can tell you almost everything 'cruel' you see on youtube is a load of ****. Most of the stuff that you see as being 'cruel' is from backyard rodeos, or illiegal ones. And I can tell you, in any official rodeo out there if anything nasty happens, there are huge consequences and the cowboys (or girls) won't hear the end of it.
PETA and SHARK try to scare the crap out of people, and most of the people who support those organizations are 12 year old girls who don't know any better. PETA and SHARK have done wayyyy more harm then good in the long run.
Yes, bad stuff does happen! But guess what? It is rare for it to happen. No one enjoys a horse being gouged by a bull...... no one enjoys seeing a steer's neck broke in two because some idiot cowboy close lined the poor thing too hard....