Under the current rules, TriMet can only ban riders who cause problems on its trains and buses for a maximum of six months. But now, following a spate of high-profile incidents—including the stabbing of three men on a MAX train—the transit agency wants more freedom to enact longer bans for riders who are violent or who otherwise post a "serious threat" to others. (NOTE: In the case of the MAX stabbing, while the suspect had been involved in prior incidents, he not been cited by TriMet prior to the assault so would not have been banned.) Should TriMet have the power to ban riders for more than six months? Would you support a lifetime ban for those who commit or threaten violence on public transit? What do you think?