The charge of racism without a shred of proof, much less irrefutable evidence, is doing terrible damage to our cultural fabric.
Surely not in the evidence—there was not one shred of evidence to support that notion.
For if you follow the thread back long enough, it begins to shred.
Old English screade "piece cut off, cutting, scrap," from West Germanic *skrauth- (cf. Old Frisian skred "a cutting, clipping," Middle Dutch schroode "shred," Middle Low German schrot "piece cut off," Old High German scrot, "scrap, shred, a cutting, piece cut off," German Schrot ""log, block, small shot"," Old Norse skrydda "shriveled skin"), from PIE *skreu- "to cut; cutting tool," extension of root *(s)ker- (1) "to cut" (see shear (v.)).