This guy is an ignorant perfectionist, and he's not convincing by quoting a bunch of random political theorists. Every single nation in the world has engaged in some level of imperialism, whether it's using slave labour (which he uses as an argument) or a history of colonisation. Need I remind you that most products are made out of what's essentially slave labour, which comes from China

Just because a nation's history is that of a coloniser doesn't make it impossible to be a Western democracy. His argument falls apart when you look at the current parliament, which is the most diverse in the United Kingdom's history -- Only in Western Democracies can you have this level of diversity and equality.

Despite the above, he also calls Western nations white supremacist states. This guy's a nutter. Liberalism isn't right-wing.