When was the term "marriage" introduced into our collective vocabulary, and by which "organization". Was it secular or religious? What was the definition of "marriage" since 3,000 BC?
Math of Marriage › Dr Karl's Great Moments In Science (ABC Science)
If it is logical to claim that marriage is already regulated (which it is), and those, whom are claiming it should not be regulated - in addition, attempting to introduce a "new" definition for marriage, are stating that religious adherents are hateful when they do not agree with them ....
This argument equates to it being hateful for "marriage" (per the "new" definition vs. the sane definition) to be denied to anyone whom wishes for it. This includes marrying your dog, your sister, your dad, ad infinitum ... to oppose this is hateful.