“To ask for, or even assume there exists, rational reasoning behind anything done by leftists is to be forever disappointed. Rational reasoning does not exist in the irrational mind and irrationality is required for modern leftism.”
Rational or not they have reasons for doing this that they think will benefit them. Money, power, control, the advancement of communism are common reasons motivating leftists. Its hard to see where any of these are advanced with the import of muslims/africans. There is one reason that may explain their behavior, an irrational hatred of the West, Capitalism, and conservatism. As Alfred said in the Batman movie, “some men just want to watch the world burn”. They hate the current system so much they want to destroy it at any cost. Whether they survive the change doesnt matter to them. It explains why every concept of western civilization from economics to sex, gender, logic, science, morality, tradition, history, etc is rejected and under constant attack.
And there you have it.
The destructionists will have excuses and slogans, but no competent reason or rationality behind them.
This is why, for followers, they draw none but those unwilling or incapable of considering any issue beyond the bottom of their own bellies, or any further in reach than their own gonads. This is also why, with leftists, no damage is seen by any until it happens to the individual, and then it is only recognized by that individual as it happens. And, more often than not, the individual suffering the repercussions of destructionism will be incapable or unwilling to assign blame to the actual cause of the effect.