Delta Removes Passengers for Supporting President Trump

Some passengers were having a private conversation as their flight from Washington D.C. to Minneapolis was boarding. Another passenger overheard them talking about Trump and complained. Police were called and the Trump supporting passengers were escorted off the plane. My friend (who took the video) asks if they would have been removed if they said "Biden 2021." Note - the flight attendant threatening that if there are any other "disruptions" those passengers will also be removed. This happened on the DCA to MSP flight on January 8, 2021.