My point is that they advertise themselves as being proponents of civil rights in general, and always support the broadest possible interpretation of the language of the constitution. In most cases, they are always trying to expand the interpretation to include new rights and new manifestations of rights that the founders never could possibly have had in mind.
Not always. There is a school in NC with a student-led prayer during the raising of the flag, before classes began for the day. This is Constitutional as long as the school opened itself up for any group to use similarly. Teachers were attending the meeting on a purely participatory basis, not leading it. However, the school had, after being threatened with litigation before, had arranged with the local ACLU for the ACLU to determine if such activities were vaild. The ACLU opined the teachers involvement was illegal and the ACLU would sue if it happened. The teachers were then banned from attending by the school board.
Prior restraint on freedom of speech? Check.
Restrictions on freedom of assembly? Check.
ACLU setting itself up as the final arbiter on what speech is permitted? Check.
The ACLU is like any other large organization; it exists first to serve its own needs and second the desires of its constituency.