When Reza's mother arrives at the Warner's house, she is wearing a traditional Muslim headscarf (hijab). After she learns that Reza is being interrogated, she sits down and we can see that she has removed her hijab. The whole point of wearing the hijab is that a traditional Muslim woman will not have hear head uncovered in public. (Some might argue that perhaps Reza's parents are more liberal Muslims, but if that were the case, then his mother would not have been wearing the hijab in the first place.)
Before putting handcuffs on Reza, Tony instructs him to put his hands behind his head first which is not proper procedure.
Tony didn't pat down or search Reza before putting handcuffs on him.
While they were transferring Nina, Ed shouldn't have told Jack what kind of security CTU set up for them in front of her.