給點建議,怕把事鬧大, should I go to HR?

給點建議，怕把事鬧大，同事水平一半，但仗著來的早，特油，開會從來晚到。但是, I have seen many people get emotional at work, while, yelling at people is most unprofessional thing to have to experience and people should not get away of it. I do not care how bad of a day he has had, treating another human like this is unacceptable.