In fact the presidents of both parties (Eisenhower and LBJ) signed legislation (two civil rights acts) in direct opposition of the Klan's goals.
I'm not saying people need to agree with Eich, but it's an awful false equivalence to compare him to terrorists.
Klan member Edward L. Jackson was elected governor of Indiana, and "Although the full extent of the Klan's power was unknown at that time, it claimed that its members occupied more than half the seats in the Indiana General Assembly, and a large percentage of the local offices in Indiana." (Wikipedia again, but uncited)
Regarding Eich, while I don't think he himself supports violence, it's not such a huge leap to violence from a platform whose roots are in the Biblical verses:
"You shall not lie with a male as with a woman; it is an abomination" (Leviticus 18:22)
and
"If a man lies with a male as with a woman, both of them have committed an abomination; they shall be put to death; their blood is upon them" (Leviticus 20:13)
Romans 12
Repay no one evil for evil, but give thought to do what is honorable in the sight of all. If possible, so far as it depends on you, live peaceably with all. Beloved, never avenge yourselves, but leave it to the wrath of God, for it is written, “Vengeance is mine, I will repay, says the Lord.” To the contrary, “if your enemy is hungry, feed him; if he is thirsty, give him something to drink; for by so doing you will heap burning coals on his head.” Do not be overcome by evil, but overcome evil with good.
Christians who love the Bible know this passage by heart. Very few care to memorize the (no-longer-followed) legal code of Israel. The ignorant choose to take the Bible out of context to justify their hate. Please don't make the same mistake.
"and they shall be abhorrent to you; you may not eat of their flesh, and their carcasses you shall detest. 12'Whatever in the water does not have fins and scales is abhorrent to you. 13'These, moreover, you shall detest among the birds; they are abhorrent, not to be eaten: the eagle and the vulture and the buzzard,…"