Nonsense. Unless President Trump was personally in Jerusalem to throw the first fire bomb or shoot the first gun, he didn't start any conflict there.
President Trump followed through on a vow he had made throughout his run for Presidency, to officially recognize Jerusalem as Israel's capital. After being democratically elected by the American people, he acted on that vow. You cannot blame the President of America for any violence when all he did was legally change his country's official view on Jerusalem, in line with his manifesto and democratic election.
People are responsible for their own actions; it doesn't matter if they are Palestinians or Americans. Violently reacting to President Trump's decision is not acceptable. The Palestinians who decided to act violently against Israelis, in light of President Trump's decision, are the ones responsible for having caused this conflict in Jerusalem. Nobody else is to blame.