It seems to me that the ultimate goal of the far left is a massive reduction of human population, by whatever means necessary.
Abortion is one vector.
The promotion of homosexuality is another.
Homosexual behavior among animals occurs under conditions of overcrowding. Apparently, stress on the female animals causes changes in the hormones of their newborn which subsequently have an influence on their offspring. Probably happens in humans too. Whatever happened to the idea of protecting pregnant women from stress?
Regarding the Little Ice Age, how do these data correlate with the missing sunspots of the Maunder Minimum? There may have been an additive effect.