In Caracas, this feels like the hardest moment in Venezuela's modern history

"It's actually us, the Venezuelans, who are helping each other. We live in a society that has grown into helping each other. We don't depend on the government – that doesn't exist for us anymore."In the same part of town, called Chacao, the Interim President, Delcy Rodriguez, took a tour with the mayor and was on the receiving end of residents' ire."You're campaigning in the middle of a tragedy! The government isn't doing anything for the people," yelled one resident.On a personal level, I know these streets well. I lived in the affected neighbourhood of Los Palos Grandes in Chacao for several years when I was the BBC's Venezuela Correspondent. My old apartment block was just metres from the collapsed Petunia building, where rescue crews are working around the clock to reach trapped residents. A friend recently posted on social media that her mother was among the missing under the building's rubble.It was a huge relief to see my old building, the Alheli, still intact and its genial caretaker, Pedro, still outside chatting to elderly residents on the porch. One of them had twisted her ankle on the way down the building. All of them agreed they couldn't remember a tragedy this severe in Venezuela in their lives.At the scene of the worst-hit areas – particularly the coastal town of La Guaira – the desperation is even greater. The scene around more than 100 flattened buildings is apocalyptic. And as hopes fade, anger grows."There are still people in there, we need machinery," says affected resident Eileen Lada. "Help us, please," she pleads.