Tattoos should be allowed to be visible in a professional environment as long as they are not innapropriate or offensive symbols or words. Tattoos are an individuals way of expressing themselves. A lot of people use tattoos to memorialize someone or something and can have beautiful meaning behind it. With the constant changing of society tattoos should start to be more accepted and appreciated.
Tattoos should not be visible in a professional setting because some tattoos do say offensive things or have offensive meaning. If the company allows others to show their tattoos then they would have to let the people with offensive tattoos express themselves as well. Companies tell one when applying that they don't discriminate so they can not be bias as to who can show tattoos or not.