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.

In fact, it seems as if allowing people to carry guns on board aircraft made it easier for the terrorists to hijack them, as the terrorists in many cases just walked right on board with the guns.
Valid

You're saying that guns should be allowed into school in order to allow some students (or teachers) to defend themselves if they were attacked.
Valid

What stupid Americans like you don't understand is that revoking the Second Amendment wouldn't play any part on protecting anyone from criminals that're armed with guns.

Valid