This is heartbreaking.
NYPD Officer Rafael Ramos is one of the men who was murdered on Saturday in Brooklyn, and he sadly left behind his 13-year-old son Jaden Ramos.
Following the horrible shooting, Jaden posted a message to his Facebook, saying:
America's favorite dancing twins Justin and Jeremy are known for their amazing dancing skillz on the Wii.
And this time, they danced AND sang along to their favorite party summer hit, LMFAO's Party Rock Anthem.
Watch them rock out above!!