Answer:
its is the first comma its not supposed to be there
I think that it is "It reinforces the idea that without equality in the US, the idea of a free society is a joke."
It is a metaphor because the sentence is comparing two different things without using the word "as" or "like".
Answer:
One feature of Internet slang is that the rules of grammar are relaxed; punctuation, capitalization and other symbols are often used to
show emphasis
that is the answer