Zohran Mamdani 's offering a helping hand to the citizens of New York City .... literally, 'cause he ran to help a videographer who seems to have fainted at his press conference.

The Democratic nominee had just finished up speaking outside a federal building in Lower Manhattan Thursday ... when it seems a member of the media covering the event hit the ground hard. FreedomNews.TV

Check out the clip ... Mamdani grabs a folder and vigorously waves it to cool down the individual who fell -- then comes around a metal barrier and helps him up into a sitting position.

Mamdani puts his hand on the young man's shoulder as people crowd around to ask the guy how he's feeling, and whether he's eaten anything. FreedomNews.TV

It's a high of 80 degrees in New York City today ... not burning h

See Full Page