We would like you to assess the QUALITY of each of the following argument (discussing Gay Marriage) 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 gay marriage. An invalid argument is a phrase that cannot be interpreted as an argument or not on the topic of gay marriage.

Q: Except blacks were barred from marriage to those that white people could marry, and white people were barred from marriage to those that black people could marry.

A: Valid
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Q: Straight people have marriages gay people have domestic partnerships they are practically the same thing why change it there's really no need to.

A: Valid
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Q: People are also killed because they are of a certain race, religion or even gender every day, and they have civil rights protections, so what would the difference in this case be?

A:
Invalid
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