Greenpeace T-shirts have been banned from Parliament after the organization staged an illegal demonstration on the Hill this week. The ban is due to "recent events," a security guard told a reporter from The Canadian Press who entered the Parliament buildings as a visitor Thursday wearing a Greenpeace T-shirt. The reporter put on the shirt to confirm reports that security was searching visitors for Greenpeace logos......New Democrat MP Libby Davies said she understands Monday's protest may have heightened tensions, but Parliament Hill is a place that should defend freedom of expression. "The fact is, wearing a T-shirt that says Greenpeace on it does not mean that you're going to do something out of line," she said. "I think they need to have a measured and reasonable response."