No matter if the topic at hand has to do with politics, science, education, social issues, or religion, Leftism is like a destructive, malignant cancer that spreads throughout these arenas of ideas, infecting both spectators and participants with deadly consequences.
Regarding politics, one need look no further than the events of the 2020 U.S. Presidential election - what an absolute destruction of all that is Constitutional and lawful. Congress, the Judiciary, and every single alphabet agency has been exposed as either sympathetic to - or too cowardly to resist - the tyranny of communism, the ultimate leftist ideology.
Regarding science, in the past, members of the atheistic scientific community admitted their motivation to erase God through (false) science had to do with God "getting in the way of our hedonistic desires" - so, disprove the existence of God, then with a clear conscious pursue whatever depraved, licentious desire you fancy. Did you know the "father of Artificial Intelligence", Marvin Minsky, was on Jeffery Epstein's "Lolita Express" flight logs?
Regarding education, leftists have taken control of education at every level and have eradicated the teaching of Civics and replaced it with Social Justice, Liberation Theology, 1619 Project, etc., all based on distorted facts/outright lies about history, economics, political agendas, and the development of the U.S. and its contribution to modern society.
Regarding social issues, the left continually seeks to place blame for the lack of economic, educational, and societal success of certain minorities in the U.S. squarely on the shoulders of Anglo-Americans, refusing to allow as a point of discussion the absolute, undeniable, well documented root cause of these failures: the destruction of the minority family unit through government welfare dependency programs, the architects of which being the leftists themselves.
Regarding religion, leftist thinking has replaced the Biblical axioms of "Speak, Lord; for thy servant heareth" and "not My will by Thy will" with endless rounds of rationalism, higher criticism, sympathy toward existentialism, situation ethics - every mechanism you can dream of in order to question what is plainly stated in the Word of God, often resulting in interpretations that are the antithesis of what God originally said.
Alas, the problem of leftist thinking will ever be with us as "the wheat and tares grow together" - and we must pray for patience in dealing with Christian leftists, lest we uproot them and bring upon ourselves the displeasure of a God Who loves them as much as He loves anyone else. It's easy to love the truth...the challenge we must face and overcome is to love the brethren.