I think this is where the difference between classic liberals and modern liberals really is showing up. Classic Liberals (and libertarians) are the champions of free speech and a free press.
UKIP and the LDs used to have an overlap in voters. These were the libertarians who believed in free speech. Some of them were frankly outright racist and deservedly should be called on it but at the same time I think there was something of a point here. It wasn't so much the calling out of racism, it was the way it was done.
I think my mind changed somewhat since the referendum. There were valid arguments which I did understand and did see in amongst the dog whistles. But the way in which they dominated it made it hard to argue or make a point against that.
I've gone much more back to my roots where my lectures said, beware of censorship of any kind as it can be used against you. I think I understand their point far better now than I ever did.
This is why I think the LDs have somewhat lost their way here. Vince Cable has been going on shouting about racists and isn't seeing past that. Its a mistake. In the same way Farron was forced out of the leadership for being homophobic on a personal level despite ALWAYS voting to the contrary.
Farron might be wrong, but as long as he is respectful of others way of life, you are never going to police his thoughts. It only leads to bitterness and problems. You have to argue the point in different ways (and clearly Farron listened enough to understand why he shouldn't impose his views on others and why his views were harmful to express).
Instead they have embraced this 'progressive liberalism' which is actually both undemocratic and illiberal in practice. And totally at odds with the name of the party.
The Labour Party has gone the other way slightly, shouting how progressive and liberal they are whilst at the same time Corbyn, last week actively and unashamedly embraced the racist tones of the former UKIP lot whilst also taking on an authoritarian tack on feminists without any hint of irony and no awareness of hypocrisy. Nor the harm which this actually does.
This is a difficult area to navigate, but the lack of self awareness and the huge political blindspots that have appears are the real issue.
People have simply forgotten the principles of liberal democracy and what it needs to function properly.