Shoot! you dummy

In the previous chapter, we read that Kamran was confused and didn't know what to do so he asked Rashid and Rashid replied:

Rashid: Your so-called friend is threatening to kill me and you are asking me! What do I want you to do? Okay, think of Kashif as a criminal who is trying to take the law into his own hands

No one moved and acted on this statement, then:

Rashid: Shoot! you dummy

Kamran and Sana both said at the same moment:

Kamran and Sana: What!

Rashid: Yeah! Are you going to help a criminal?