Venezuelans blocked streets in Caracas Tuesday to protest the president’s call for a new constitution. Protesters filled streets with pieces of metal and building materials. Others set fire to small mountains of trash. On Monday, President Nicolas Maduro signed a decree to begin the process of rewriting the constitution. The declaration orders the formation of a constitutional assembly. In a speech, Maduro said some of the assembly's 500 members would be elected by "workers" to replace the document. The Venezuelan constitution was last changed in 1999, under the rule of then-president Hugo Chavez. “The day has come, brothers,” Maduro said. “Don't fail me now. Don't fail Chavez and don't fail your motherland.