I Think Being a Parent Is the Most Difficult Job

So when they got home today my 3 sons decided they were going to terrorize their sister so they took all her stuff and they wouldn't let her have it they messed with her even when she stated to cry while I went outside for 5 minutes let me remind you my oldest son is 13 years old and he's picking on a 7 year old at this point I don't know they finally all went to sleep