Yes, I am painfully aware of the many failings of Mrs. Clinton and Mr. Trump. This is not about them. . This is about the United States Secret Service, a perceived (valid) threat to someone in their care and their proportional professional response. Yahoo/AP news reported Saturday’s event here:

White House Republican candidate Donald Trump was bundled off stage by security officers after a false gun scare during a campaign appearance. The US Secret Service, which provides security for presidential candidates, later said someone in the crowd had shouted “gun” but that no weapon was found. Trump swiftly resumed his speech in Reno, Nevada, and local media reported that a suspect who was wrestled to the floor during the incident had been released. The 70-year-old real estate tycoon reappeared just minutes after being led away by Secret Service officers, who shielded his body with their own.

The Secret Service protected the candidate: with their bodies from a possible gun. Then they did not stop and do an ideological check: they did their jobs.  And they did not go away from any perceived danger.  They went towards an unknown danger.  Because that is what they are there to do.