Yes, it's true. We here at Leftieland were appalled by in August 1976 when Clapton made his racist rant, just as we are appalled by Morrissey's anti-immigrant, Islamaphobic rants. What part about Clapton's infamous drunken tirade did you in Rightieland like? According to Wikipedia's entry on Rock Against Racism:
"
Eric Clapton made a drunken declaration of support for former
Conservative minister
Enoch Powell (known for his anti-immigration
Rivers of Blood speech) at a concert in Birmingham.
[2] Clapton told the crowd that
England had "become overcrowded" and that they should vote for Powell to stop
Britain from becoming "a
black colony". He also told the audience that Britain should "get the foreigners out, get the
wogs out, get the
coons out", and then he repeatedly shouted the
National Front slogan "Keep Britain White".
[3][4]"