Can he do this?

New York City Mayor Bill de Blasio is using his official mayoral account (and not his personal account) to pimp an upcoming protest march outside of the Trump International Hotel at Columbus Circle on January 19 to launch “100 days of action” against President Trump:

It also looks like he’s added the “NYC” logo to this poster promoting the event:

In other words, the Mayor of New York City is officially sanctioning — and from the looks of it, using taxpayer resources — to promote this event?

Also attending the march are Michael Moore, Marc Ruffalo and Alec Baldwin, among others: