TASK DEFINITION: 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.
PROBLEM: I don't believe guns are good for anything, and I see no use in having them, but I believe it is everybody's right to produce or keep one, as it is just a weapon like anything else.

SOLUTION: Valid

PROBLEM: When we factor in the usefulness of guns for self-defense against violent criminals, it's clear that normal gun owners are at less risk of criminal victimization.

SOLUTION: Valid

PROBLEM: We are law professors and historians who have a deep interest in the Second Amendment and its implications for the regulation of guns and of gun ownership.

SOLUTION:
Valid