Futures waver as traders kick off June

• U.S. stock index futures opened lower Sunday evening as violent protests rocked the nation, though things turned around quickly following positive momentum in Asia. Dow +0.5%; S&P 500 +0.4%; Nasdaq +0.2%.
• Hong Kong and Shanghai shares surged 3.4% and 2.2%, respectively, as data boosted hopes of a V-shaped recovery and showed China's manufacturing activity unexpectedly expanding in May.
• There was also relief that while President Trump began the process of ending special U.S. treatment for Hong Kong, the measures fell short of withdrawing from a Phase One trade agreement or issuing sanctions directly against China.
• Regarding the protests: "The direct economic impact of the protests is small, at least so far," said Mark Zandi, chief economist of Moody's Analytics.
• Update (4:30 a.m. ET): Futures have gone negative once again, pointing to losses of 0.5% at the open.