sylviann I agree. I am a retired solicitor, I have studied constitutional law and have studied the way the EU works both constitutionally and in practice.
I voted Leave for a number of reasons, mainly but not solely because I do not believe in protectionist blocs.
I have tried to have discussions with people on facebook but, in the Guardian in particular, the debate never gets above 'if you vote Leave you are a racist and a moron'.
If they reluctantly agree that the EU is not perfect, the will change it to 'well you may not be a racist, but you enable racism'.
If people who are as left wing as I am (there is nothing left wing about protectionism or about the way that Greece was treated) is bullied to the extent that I have been on social media, it is not surprising that people who are less able to articulate their views in writing, turn to parties or sites that do listen to them.
Remain need to be able to engage with the actual issues and stop the insults. They need to stop telling racists that 17 million people agree with them which gives them the confidence to behave in acceptable ways. They need to stop talking the country down and embrace the challenge of change.
From my experience so far, they won't however careful you are about the way you try to engage with them.