A little scrolling around the internet teaches us that Dennis Prager is a long-time commentator and columnist and that "Prager U" is one of his online "projects." His columns suggest that he is Jewish, a strong-strong supporter of Israel (and thinks that modern American Jews do not support Israel enough), believes that the current president is the "best friend Israel ever had," deplores the "destruction" of the Miss America Pageant, is a strong Trump supporter and is on the far right on other current social issues. It appears that one of his columns has nasty things to say about the Southern Poverty Law Center. Others can read and come to their own conclusions.
Dennis Prager is a conservative (lower-case "c") Jew rooted in Orthodox Judaism, and first came to public notice some 35 years ago when he took over as host of "Religion on the Line," which aired Sunday nights on talk radio KABC in Los Angeles. Soon afterwards he was hosting the daily evening show (when the Dodgers weren't playing, providing a conservative intellectual counterweight to Michael Jackson's (not the pop singer or the beer critic) more liberal (and very-highly-rated and highly-regarded) morning program on the same station. This was in a day when talk radio was focussed more on interviewing a wide range of guests and listeners calling in to chat with the guests. Part of his breaking into a more national audience was occasional essays in
First Things when Richard John Neuhaus was editor.
From the beginning Prager always has had a strong focus on ethics, and that has never changed. I've listened to him off-and-on since he started at KABC, and he is
always respectful and generous to and with those with whom he disagrees. If he has something "nasty" to say about any thing, it has to be truly repugnant.
Pax, Steven+