If the students are not permitted to show such visible tattoos, neither should the administration and security personnel, who presumably set the example.

I'd wager there are a fair few things school employees are allowed to do that students are not. When I was in high school, the principal once made an announcement in assembly about how no, really, we were not allowed to have food and drinks in the hallways. "Some of you may point out that you routinely see your teachers walking in the hallways with cups of coffee," he said, "and point out that this seems to violate the rule against your walking in the hallways with cans of soda. And you're absolutely right. This is what is known as a double standard. Get used to it."

I don't care for the hyperjudgmental tone in this employee's letter. Are these colleagues with tattoos doing their jobs (as she is doing hers rather than focusing on the torn edges of the poster)? Then maybe she could shut the FUCK up and keep her eyes on her own paper? Just a thought.