Guns for self defence is definitely the wrong message.
The message should be normal people doing normal things.

Programs like this cannot ever move the issue forward, they are not set up for this.
They are set up so that two extreme polarities of the argument can bait and fight each other, giving good TV.

Who is the "Lucy" woman who simply cannot keep her mouth shut?

With the poor transmission its difficult to follow the arguments clearly, but how does the shooting of a black male with an Uzi fit into the wider argument other than to state that bans do not work?