We would like you to assess the QUALITY of each of the following argument (discussing Gun Control) and determine if the argument is Valid or Invalid. A valid argument is clearly interpretable and either expresses an argument, or a premise or a conclusion that can be used in an argument for the topic of gun control. An invalid argument is a phrase that cannot be interpreted as an argument or not on the topic of gun control.

We know that Bloomberg is convinced that guns are the reason his city is such a mess.
Valid

Civilians with other types of gun should be shot on sight by them.
Valid

Or how about their opinion that plastic pellet guns are considered true guns, only to immediately reverse their previous decision?

Valid