Maybe a money grubber too. ACLU is making a fortune from these lawsuits. Last week, just two states paid the ACLU nearly a million bucks in legal fees after the states lost two cases regarding abortion and the free exercise of religion.
The ACLU (and AJCongress, PFAW, ADL, NCJW etc) troll the nation 24/7 looking for these lawsuits. They have numbers you can call to rat out anyone you see praying, setting up a religious display, pushing "Choose Life" license plates or expressing their faith in any way you believe might be actionable.