So you're saying that if a racist believes the same as you do on a topic (unrelated to their racist beliefs) then you shouldn't stand up for those beliefs too or you're automatically a racist too by association?
The official government campaign was called "Vote Leave" , it was mostly conservative and was focussing more on economic arguments,
Whereas Farage had his own "Leave" campaign, centred on immigration. There was a lot of disputes between them, and "Vote Leave" distances itself as much as it could, considering the circumstances.