Clinton, who spoke at a rally in Seattle, acknowledged her win in Arizona and said she disagreed with the rhetoric surrounding the attacks in Brussels calling it "dangerous."
"The last thing we need now are leaders who incite more fear," Clinton said. "What Donald Trump, Ted Cruz and others are suggesting is not only wrong, it's dangerous."
Clinton powered through her speech despite a microphone failure that she blamed on the "gremlins," and seemingly took another shot at Republicans during her speech, calling the 2016 race a "difference of ideas."
"This is a contest between fundamentally different views of our country, our values, and our future," she said.