Pedophilia is a sexual orientation.
Whether it's under the Western legal system, or under any cognizable system of morality developed by the human race... children are not recognized as being capable of forming proper consent for sexual activity. Therefore, sexual activity with a child is inherently coercive and exploitative. Therefore, the only pedophile who is arguably "non-threatening" is one who is a pedophile only in his or her mind... without ever putting it into practice.
This is a debate that can be held with calm and cool heads, addressing each other rationally. However, the claim that pedophilia is a "sexual orientation" really does warrant a gay person punching you in the face. Really, really hard. You do not get to piggyback a ride with illegal aliens, or Muslims, or any other completely unrelated group that is solely calculated to draw reflexively-liberal sympathy. That accomplishes nothing except hurting those groups by giving ammunition to their right-wing enemies, who already think in those terms and look for excuses to justify it.