While details were still scarce in the initial stages of the investigation, the fatal shooting of at least three police officers in Baton Rouge, Louisiana, has caused sadness and anger across the nation.
The shooting, which has been called an "ambush," left at least three other officers injured and a dead suspect, as well as two more on the run.
And it comes less than two weeks after the fatal shooting of Alton Sterling on July 5, and protests in the city where hundreds were arrested.
Then on July 7, the Dallas ambush took the lives of five police officers and marked the deadliest day for law enforcement since 9/11.
Just last week four people were arrested in an alleged plot to kill police officers, and a fifth person was arrested on Saturday.
President Obama in statement noted that the shooting happened on "the Lord's day" and called the attacks "the work of cowards who speak for no one. They right no wrongs. They advance no causes."
Republican presidential candidate Donald Trump posted on Facebook: "How many law enforcement and people have to die because of a lack of leadership in our country? We demand law and order."
While presumptive Democratic nominee Hillary Clinton said in a statement, "We must not turn our backs on each other. We must not be indifferent to each other. We must all stand together to reject violence and strengthen our communities."
Here is how other political figures reacted to Sunday's horrific events.