At least 15 people were left dead after a mass shooting at a Hanukkah celebration at Bondi Beach, Australia, Sunday … and TMZ has disturbing video capturing the terrorist attack as it unfolded.

In the footage … beachgoers are seen shielding each other as shots ring out above them. Clutching chairs and anything they can to hide themselves from the attackers, families are heard screaming and frantically calling out to each other as the chaos rolls on.

Police sirens are heard faintly in the distance, but still too far away to offer any protection against the predators hunting them down.

As we reported … one of the gunmen was counted among the dead in what leaders called a cowardly and targeted attack on the Jewish community.

According to officials, the attackers positioned themselves on a pedestrian bridge overlooking Bondi Park before unleashing a hail of bullets onto the crowd gathered near the playground.

Police reportedly revealed one suspect had been on a watchlist, though not considered an immediate threat.

The surviving gunman was reportedly taken into custody and was hospitalized in critical condition.

Rob Reiner, his wife Michele, and their son Nick attended Conan O’Brien‘s Christmas party Saturday night. At the party, Rob and Nick got into a “very loud argument,” loud enough for many others to hear … Reiner family sources tell TMZ. We’re told Rob and Michele then left the party. We do not know if Nick left as well.

TMZ is the first to report the argument between Rob and Nick on the heels of the murders.

Our family sources add … Michele had been anguishing to friends over the last few months that she and Rob were at their wits’ end over Nick’s mental illness and alleged substance abuse issues, and did not know what to do with their son Nick … saying, “We’ve tried everything.”

Carl Carlton — best known for his smash hit “She’s a Bad Mama Jama” — has died at 72.

The sad news was confirmed by his son Carlton Hudgens II, who announced his dad’s passing on Facebook … sharing a throwback photo of the late singer and writing, “Long hard fight in life and you will be missed.”

The cause of death hasn’t been revealed, but the passing comes six years after the singer suffered a stroke.

Carlton launched his music career back in the ’60s, later hitting the Billboard Hot 100 Top 10 in 1974 with his cover of “Everlasting Love.”