How is the ACLU not all about preserving the 2nd Amendment?
I have no idea what you are talking about. When I searched for ACLU and 2nd Amendment, this is what came up:
ACLU Thinks the Second Amendment Is a Threat to the First Amendment
https://reason.com/2021/09/23/aclu-says-second-amendment-threat-to-first-amendment/
Even better:
ACLU says Second Amendment is racist
https://americanmilitarynews.com/2021/07/aclu-says-second-amendment-is-racist/
Congratulations on your principle stand in the defense of the ACLU.