Constitution Party founder Mohamed ElBaradei has called on people to participate in protests to mark the second anniversary of the January 25 Revolution.
"We have to make sure poor people are able to eat, sick people can find health care, children can get educated, and everyone is treated with dignity," ElBaradei said via a video message on YouTube.
He also stressed that achieving those demands will take time.
"I am going to protest on Friday because we are all Egyptians, not Salafists, not Muslim Brothers, not Copts, not liberals, I am going there to reunite Egyptians and demand a constitution for all Egyptians," he added.
Opposition protests to mark the revolution's second anniversary will be called "No to the Brotherhood state; the revolution continues."