Don’t use the poor behavior of others as an excuse to sink to their level.
Your people will be watching you in these situations, and staying in-control of your responses will enhance your leadership ability with them. Sliding into juvenile tantrums, griping, or bullying will make you look small and petty. Good people don’t want to follow someone like that.
(image source: https://www.facebook.com/photo/?fbid=350982124454049&set=a.102098359342428)