Not trolling. That guy has set back racial relations in the U.S. by 60 years. This is the logical progression.
Republicans will blame Obama for everything. If someone takes a shit wrong, they blame Obama. Drop your soda on the floor--blame Obama.
This guy most likely would have shot them, even if Obama wasn't president.
There is no evidence to suggest that his shooting was the result of Obama being president. Sorry, I take this "evidence" thing sort of seriously.