We've already established precedent with the likes of the NAACP...
You mean like this?
IRS Ends 2-Year Probe Of NAACP's Tax Status
"Nearly two years after a controversial decision to investigate the NAACP for criticizing President Bush during the 2004 presidential campaign, the Internal Revenue Service has ruled that the remarks did not violate the group's tax-exempt status."
IRS Ends 2-Year Probe Of NAACP's Tax Status
Whoever decided that they weren't political was lying. It's pretty clear that the NAACP is a purely political organization. They claim they're into public service, but the only service they seem to do is drumming up racism in the black community. They were extremely active in the Trayvon Martin case, which became a focal point for racism in an election cycle. Recently they have submitted nominations for the DoJ's civil rights division.
Seven Democrats took a rare step Wednesday and joined Republicans to oppose President Obama’s pick to head the Justice Department’s Civil Rights Division.
The Senate failed to advance the nomination of attorney Debo Adegbile by a vote of 47 to 52 as eight Democratic senators voted against invoking cloture on the nominee. The senators included Sen. Bob Casey, D-Pa., Chris Coons, D-Del., Joe Donnelly, D-Ind., Heidi Heitkamp, D-N.D., Joe Manchin, D-W.V., Mark Pryor, D-Ark., and John Walsh, D-Mt. Senate Majority Leader Harry Reid joined the seven senators by voting no for technical reasons which allow him to bring up the nominee in the future.
Adegbile’s nomination was controversial because of his previous work as counsel for the NAACP’s Legal Defense Fund, which helped overturn the death sentence of Mumia Abu-Jamal, who was convicted over 30 years ago of killing Philadelphia Police Officer Daniel Faulkner. Both of Pennsylvania’s senators, including Democrat Casey, were vocal in their opposition to Adegbile’s nomination.
Senate Dems Join GOP to Block Justice Nominee Who Defended Cop Killer - ABC News
These people are purely a political animal. They have no right to tax-free status under the law.