I found this offensive, largely because I had to come to terms with that kind of thinking before myself.
One could argue that getting a tattoo is living an "alternative lifestyle" however, the person who does the job of injecting that tattoo is just a business professional rendering a service that some people seek. When I worked for a gambling company I had to learn that I was just a professional rendering a service, and not the cause of people with gambling problems and that I could not take responsibility for other peoples actions.
Further I think having more varied parents at career day would help the children to understand more about how the world works.