A number of NGOs have been implicated in this. Foremost is Coalition for Humane Immigration Rights or CHIRLA, and the photos of signs show they were printed by PSLWEB / Party for Socialism and Liberation.
CHIRLA has the EIN of 954421521. Most of its private funding appears to be from DAFs, which are the hardest to trace. However 34 million of its reported 45 million in revenue are from government grants.
