Indeed. Look how Obama moved from a strong and repeated "if you like your guns, you can keep your guns", and previously as a Senator even voted for the bill putting heavy, direct penalties on Katrina style mass confiscations, to this month calling for ... mass nationwide confiscations of all handguns and semi-auto long guns, which Hillary! echoed in the debate.
Not sure if Sanders has changed here, he's not as viciously anti-gun, he's changed his language recently but, not, based on what I was just able to dig up, his real positions.