Historic video from Russian state TV from 17 July 2014, when the presenter repeated about "another success of pro-Russian self-defense forces in Donbas", namely downing "another Ukrainian military transport aircraft". Shortly after it became evident that it was a passenger aircraft, Malaysia's MH17 which Russians have downed, killing 298 civilians. From that moment Russian TV started posting denials, as if the previous news never existed. You can also find a longer and better quality version here.