Tories have their internet bubble – A lesson for the Left?

In a recent twitter spat between Jonathan Portes and the Tory MP Stewart Jackson, Douglas Carswell, another Tory MP, tweeted the following:

I thought this was odd. A Tory MP saying that they “no longer need to have folk like” the Director of the National Institute for Economic and Social Research “determine parameters of debate”. In other words “Thanks to internet” Tories can ignore people like Jonathan Portes, former Chief Economist at the Cabinet Office, and don’t need to debate them or seriously consider their opinions.

But then I thought this is basically how much of the twitter-left conducts itself today: border-policing, disavowal and ressentiment.