Self-proclaimed acting president Juan Guaido released a video on Twitter calling for people to mobilize and protest on Tuesday.
That comes amid the political crisis and the humanitarian aid stalemate in Venezuela.
The government of embattled President Nicolas Maduro has blocked aid deliveries.
Meanwhile, the opposition organized a series of meetings Sunday to prepare a distribution network for the aid.
In the video, Guaido recognized the work of volunteers, saying “our needs are a lot, but we always can help.”