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.
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Question: If a gun owner knowingly sells to a prohibited felon who commits a murder with the gun, then the felon alone is responsible for the murder.

Answer: Valid


Question: Citing the Second Amendment and the increasingly maniacal rhetoric of conservative media firebrands, a small handful of violence-threatening protesters aims to make the rest of us -- whether pro- or anti-health-reform -- afraid to speak out.

Answer: Valid


Question: Take free speech, which has often times been limited by the government (e.g. you cannot yell "fire" when there is in fact no fire) when it is deemed that said right may be dangerous for other civilians.

Answer:
Valid