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.

The people in Mumbai learned that the hard way this year when that handful of terrorists came in and slaughtered several hundred innocent people in a matter of days without any opposition.
Valid

SCOTUS has upheld "gun control" in principle repeatedly.
Valid

It also give the right to equipment with which you could execute murders, armed robberies and other violent crime.

Valid