That's absolutely fucked. The whole story of the Holy Land Foundation being railroaded and labeled as terrorists when all they did was advocate for human rights of Palestinians...it's an incredibly chilling story. To hear that those who merely donated to a worthy cause were also then audited...the outrageous injustice makes my blood boil.
Or just going there out of intellectual curiosity, like how a leftie might read Main Kampf to check what that shit is.
You can end up in a very bad position...