The remark sparked immediate backlash, both online and from a number of high-profile people including former CIA director Michael Hayden: "If someone said that outside the hall, they'd be in a police wagon being questioned by Secret Service."
However the Trump campaign issued a own statement to clarify the Republican candidate's remarks.
"It's called the power of unification — 2nd Amendment people have amazing spirit and are tremendously unified, which gives them great political power," senior Trump communications advisor Jason Miller said. "And this year, they will be voting in record numbers, and it won't be for Hillary Clinton, it will be for Donald Trump."
This is not the first time the Trump administration have come under fire for suggesting violence. In July Al Baldasaro, Trump's adviser on veterans' issues, made headlines when he suggested Clinton should be out before a firing squad over her email scandal on “The Kuhner Report” radio show.
"This whole thing disgusts me, Hillary Clinton should be put in the firing line and shot for treason."
Clinton's team have responded to the comments, with Clinton campaign manager Robby Mook blasting Trump for using "dangerous" language.
"This is simple — what Trump is saying is dangerous. A person running for President of the United States should not suggest violence in any way," he said in a statement.
Hillary also took to Twitter to comment: "A person seeking to be the President of the United States should not suggest violence in any way."
Users took to Twitter to also vent their anger over the comments: