Besides, riding the subway is the same as riding the airlines. If you want to ride it, we check your luggage.
At concerts, they check for drugs, cameras, recording devices.
Same for movie theatres.
If the ACLU doesn't want to be searched, then don't try using any form of public transportation, or attend events which are technically privately owned and have rules in place for those who would like to attend.
I agree. If you go to an NFL game or baseball game they check your pack for alchohol or food. I guess the ACLU has no problem with booze, but a bomb, OMG