@grey due to Feminism, nobody is having kids, but the Left can import immigrants to offset their numbers while the Right cannot, hence the Left always "wins" once you give women rights.
The Left is inherently anti-nationalist, so they want to water down national culture and identity in favor of an internationalist/globalist one, hence the destruction of history throughout the West.
Everything from the obsession with immigration, the hatred of history, etc. can all be explained by Leftist power