Disney was indeed an anti-semite and evidence of this can be found in cartoon content and his hiring practices. He is reported to have attended pro-Nazi meetings held in the US prior to WWII. He also testified before the House of Representatives during the "Red Scare" against colleagues (competitors, perhaps?) who were blacklisted. He was a McCarthy supporter and transcripts of his voluntary report can be found online. Disney was also anti-union, which he equated with Communism.

That said, IMHO, the parks and products represent (for the most part) the best aspects of his personality and those who were instrumental in helping him along the way.