Clinton and Biden were taking stage Friday in the vice president's boyhood hometown following the death of five police officers in Dallas on Thursday night. The Democratic presidential candidate is still expected to address the shootings later Friday at an appearance with the African Methodist Episcopal Convention in Philadelphia.
"I think sometimes for whites it's hard to appreciate how real that is and how it's an everyday danger", Gingrich said.
Soon after the shooting that killed five police officers and injured seven more in Dallas, Donald Trump's Virginia campaign chairman took to social media to blame Hillary Clinton and Lt. Gov. Ralph Northam for the killings.
Earlier Friday, Clinton told CNN that the Dallas attack is a "call to action" that she will effectively handle as president.
President Barack Obama addressed the police shootings from Warsaw, Poland, where he is attending the North Atlantic Treaty Organisation summit.
"This is a time, perhaps more than ever, for strong leadership, love and compassion".
Former House speaker Newt Gingrich, who Trump is vetting as a possible running mate, also criticized Obama for reacting to the Dallas shootings like "any good liberal college professor" with gun control.
This morning I offer my thoughts and prayers for all of the victims' families, and we pray for our fearless police officers and first responders who risk their lives to protect us every single day.
On Friday morning, Trump issued a statement and canceled a policy speech he had planned to give Friday afternoon in Miami.
Clinton says if elected president she will develop national guidelines on the use of force by police officers.
Trump's carefully worded response was a striking contrast to his reaction to last month's Orlando gay nightclub massacre in which 49 people died.
"I mourn for the officers shot while doing their sacred duty to protect peaceful protesters, for their families & all who serve with them". We don't want people, any American, living in fear. Witness Republican Ronald Reagan's defeat of incumbent Democrat Jimmy Carter in 1980 during the Iran hostage crisis, or Obama's victory over Republican John McCain in 2008 as the USA economy collapsed.
Hillary Clinton said that this week's deadly shootings of black men at the hands of police officers "should worry every single American" and called for white people to walk in the shoes of African-Americans in order to learn empathy and promote unity.
She also reiterated her belief that white people need to be more open to what African-Americans have been saying about the things they have to deal with for weeks.
Democrat U.S. Representative Cedric Richmond said, "If this congress does not have the guts to lead, then we are responsible for the bloodshed on the streets of America".
"There will be a temptation to let our anger harden our divisions".