Where does “anti-lynching” come from?

anti-lynching (English) comes from English lynching, from English Lynch, from Old English hlinc, from Proto-West Germanic hlink, from Proto-Germanic hlinkaz, from Proto-Indo-European kleng- — to turn, bend; to bend, turn, wind, twist.

Ancestry of “anti-lynching”, step by step

anti-lynching traces back through two separate lines of ancestry.

via English lynching

StepLanguageWordMeaning
1EnglishlynchingExecution of a person by mob action without due...
2EnglishLynchA placename
3Old Englishhlinchill, rising ground, slope; a bank separating...
4Proto-West Germanichlink
5Proto-Germanichlinkaz
6Proto-Indo-Europeankleng-to turn, bend; to bend, turn, wind, twist

via English anti

StepLanguageWordMeaning
1EnglishantiOpposed to something; That has a torsion angle...
2Englishanti-Against, hostile to; Contrasting with the norm;...
3Ancient Greekἀντι-anti-, against; like, reminiscent of
4Ancient Greekᾰ̓ντῐ́opposite
Every word from Proto-Indo-European kleng-