Article snippet: ABC abruptly canceled “Roseanne” on Tuesday afternoon, just hours after the show’s creator and star, Roseanne Barr, tweeted a racist insult about Valerie Jarrett, a senior aide to former President Obama. But the firestorm surrounding Barr does not appear likely to be quelled anytime soon — and not only because the show had been a huge hit, attracting more than 18 million viewers for its March premiere. The show’s eponymous lead character was a Trump supporter, a rare thing on the pop culture landscape. Conservatives have long resented charges of racism leveled at the president or his supporters, insisting the accusation is a politically motivated smear. The controversy is sure to intensify if Trump weighs in, either through his own tweets or at a scheduled rally in Nashville, Tenn., on Tuesday night. The White House said Tuesday afternoon that the furor surrounding Barr is "not what the president's looking at" and that he was instead focused on issues like trade and North Korea. But once the president takes the stage or begins firing off tweets, all bets will be off. Observers say the best political choice might be to steer clear of the issue, but Trump may not be able to resist. “Of course it’d be foolish to get involved — but that won’t stop him,” predicted Tobe Berkovitz, a Boston University professor who specializes in political communications. “If I was one of these cable networks, I’d start the countdown clock — and the clock probably won’t run very long... Link to the full article to read more