Trump was speaking specifically of taking guns from mental patients as soon as a field judgement is made, with followup in court. This process of immediately stopping continued dangerous actions is actually done quite often now. One example is if the police pull you over while driving and find you drunk, you car is taken away and stored while you go to jail, then court. Your vehicle is returned to you under court decided conditions. Emergency conditions can TEMPORARILY suspend rights to save one's life. As long as these emergency conditions are met and you get your guns back to you if the court decides it was done in error, then it's not that big of a problem. The problem with Trump's statement is that the democrats believes it means it's okay to take ALL guns now without a law or judicial review and never return them. If this happens, then it is civil war time.