From the SPLC:

According to reports from white nationalists, Willis Carto, a man active on the radical right for more than 60 years, has died, aged 89. Carto was one of the most active and influential white nationalists of the past century and leaves behind a legacy of vile racial hatred, especially towards Jews. He heavily influenced a number of racists who were active in the latter part of the twentieth century, such as Klansman turned-politician David Duke and William Pierce, founder of the National Alliance, at one-time the most dangerous and best organized neo-Nazi organization in America.

He earned the respect and admiration of vile people everywhere. The rest of us should feel free to speak ill of the dead.