A powerful gay rights organization claims Super Bowl hero David Tyree is wrong -- legalizing gay marriage will NOT send our country into a state of "anarchy" ... and there's proof all over the world.
A rep for the Human Rights Campaign tells TMZ ... "Anarchy? Hardly. Committed gay and lesbian couples have been able to legally marry in five states and the District of Columbia — not to mention a number of foreign countries — for years now and cows are still giving milk, little boys are still pulling little girls’ pig tails, and we still drive on the right side of the street."
The rep adds, "New York’s passage of this law will result in nothing more than a more just and equitable society."
Jarret Barrios -- President of the Gay and Lesbian Alliance Against Defamation -- ain't holding back either, telling us, "Tyree’s statements are as misleading as they are ridiculous, and do not accurately reflect the growing acceptance that we're seeing from sports stars like Charles Barkley, Steve Nash, Sean Avery, Brendon Ayanbadejo, Scott Fujita and fellow former Giant Michael Strahan."
As TMZ previously reported ... the former NY Giants star took a very hard line against gay marriage during an interview yesterday with a faith-based organization called the National Organization for Marriage.