You might have also seen a viral video of the assassination of the Russian ambassador to Turkey that quickly spread through the Internet worldwide.
Russian Ambassador Andrei Karlov was shot dead by an off-duty police officer in Ankara on December 19 when the ambassador was giving a speech at an art gallery. The shooter managed to pretend himself as his official bodyguard and later shot to
Source: Russia Wants Apple to Unlock iPhone belonging to Killer of Russian Ambassador