Thanks to Alex at Flaming Pablum for this link to "Viva Loisaida 1978." (The link has been making the rounds on Facebook.)
The description via YouTube:
Produced by "Gruppe Dokumentation" & "Tylis" and filmed in Loisada, by Marlis Momber, this 10 min. commercial gives a brief preview before gentrification occurred in Lower East Side in the Fall of October, 1978 with Chino Garcia & Bimbo Rivas.