CARACAS, Venezuela (AP) — Venezuelans of every age, class and profession poured into the streets of the capital on Wednesday to demand that President Nicolas Maduro step down and to express their support for the young opposition leader who has declared himself interim president.

Dressed in suits, scrubs, and jeans, they waved the national flag, displayed signs, and chanted slogans. One disgusted vendor threw devalued national currency into the air.

Protesters who made an appearance were heeding a call from opposition leader Juan Guaido to stage mass demonstrations despite crackdowns on previou...