Christian bigots want to legally define religion in a way that excludes atheism, so that the constitutional freedom of speech, freedom from government suppression and equal treatment granted to religion will not also apply to atheism. They wish to suppress and censor atheism by defining it as hate speech. How could they define them?
religion
a baseless, irrational set of beliefs about an undetectable controller or controllers of the universe for which there is not a shred of evidence.
hate speech
publicly disagreeing with Christians on any matter. Failing to show sufficient deference to Christian beliefs.
~ Roedy (born: 1948-02-04 age: 62)

My tongue is only partly in my cheek.