Gee, how did this happen?

The ACLU's stated goals were "to defend and preserve the individual rights and liberties that the Constitution and laws of the United States guarantee everyone in this country." It was prominent in the Scopes trial of 1925, which hoped to ban the teaching of evolution in the public schools; it stood alone in fighting the internment camps for the Japanese after the Japanese attack on Pearl Harbor; and it paired with the NAACP to challenge racial segregation in public schools. The resulting Supreme Court decision in Brown v. Board of Education that ended the era of "separate but equal" was a major victory for racial justice.

The ACLU was also involved in the 1973 Supreme Court victories in Roe v. Wade and Doe v. Bolton, which held that the right to privacy encompasses a woman's right to decide whether she will terminate or continue a pregnancy. It even fought in defense of freedom of speech, for the rights of Nazis to march against Jews in Skokie, Illinois. It led the attack against the Patriot Act.

The ACLU's activities have been characterized as anti-God, anti-American, and anti-family, all notable communist goals. Yet the ACLU did what it did in the name of individual rights. Although the ACLU lobbies Congress and state legislatures, its accomplishments derive chiefly from judges who share the ACLU's view of the Constitution as a "living document." There is little if any daylight between them and the Democratic Party and Barack Obama. And they are all pro-uncontrolled immigration.

https://www.americanthinker.com/articles/2011/12/the_jews_the_communists_and_the_democratic_party.html