Yes, President Trump is shaking up Washington, but some things definitely need to be shaken up. Exhibit A is the nation’s mental-health services — or lack of same. As if we needed another reminder, when a man with a gun walks into an FBI office hearing voices and complaining that the CIA is pushing him to become a member of al-Qaeda, he is asking to be treated for his psychosis. It is the same story, year after year, differing only slightly in detail and diagnosis. But the outcome is the same: innocent people needlessly killed and injured.