You shouldn't yell at someone with mental problems.
Sam has been waiting for an important delivery from his boss and is angry when the company mail person delivers it late.
Sam wants to vent his frustration at the mentally handicapped mail person.
Sam curbs his temper but reports the late mail to the mail department.
Sam screams at the mail person.
Sam is able to behave in a professional manner despite his temper.
Sam is reported for being verbally abussive.