Law enforcement agencies across the country, politicians, police unions and pastors lit up social media and issued statements after two San Diego police officers were shot on Thursday night.
Officer Jonathan De Guzman was killed in the shooting and Officer Wade Irwin was seriously hurt.
A flood of tributes poured in on Twitter, as law enforcement agencies learned of the news.
"It's a sad day for us all," National City police tweeted on Friday morning.
Others showed solidarity and even politicians took to social media to express heartbreak over the shootings.
The San Diego Police Officers Association issued a statement that it was "grief stricken" over the loss of De Guzman.
The association asked for the public to donate to De Guzman's family by mailing donations to the San Diego Police Officers Association at 8388 Vickers St., San Diego, CA 92111.
San Diego District Attorney Bonnie Dumanis said in a statement the shootings "sent a shock wave through law enforcement and the wider San Diego Community."
San Diego Mayor Kevin Faulconer echoed Dumanis' sentiment, saying "violence against the men and women who wear the badge is violence against us all."
Congressman Scott Peters, D-Calif., sent these condolences:
"The loss of one of our police officers is a loss for all of San Diego. I send my deepest condolences to the officer's family and loved ones, and prayers for the full recovery of the wounded officer."
Here's more on how police and politicians paid tribute.
If you are on a mobile device, you can check out the social media posts here.