In the late afternoon war veterans and military personnel travel in the back of pickup trucks and stop at houses along the trash-ridden streets.
One soldier simply bangs on the door and displays his gun. The men of the house soon exit and follow the truck a few miles out of town where they attend a "re-education" seminar for hours into the night that concludes with all the men singing songs of Zanu–PF nationalism.
Those who resist Mugabe and his men face terrible consquences.
They could be charged with treason and taken to court, as Biti has been. Or, as the Times of London pointed out in its report published Thursday, they could be killed by members of his militia.
The Times of London reported on the gruesome murder last Friday of Dadirai Chipiro, the wife of Patson Chipiro, head of the MDC in Mhondoro district, 90 miles south of Harare.
The 45-year-old was burned alive by Zanu-PF militiamen, who first chopped off one of her hands, and then her feet, before throwing her into her hut, locking the door and throwing a petrol bomb through the window.
This killing was only the latest in a long line of atrocities waged by Mugabe's regime.
Kudzi, a mother of three and wife to one of the men who has been taken for two consecutive nights, talks about what she believes is going on.
"We are being told what to think and do," she said. "They don't give us any food for our starving children or money, they only give us fear."
For many kids who live on the streets of Mbare, the Zanu-PF members give these young people beer and marijuana during breaks between marching.
The United States has accused Mugabe's government of using food as a weapon to hold onto power at any cost.
Last Friday, U.S. State Department spokesman Sean McCormack told reporters that the Zimbabwean government, having "wrecked" the country's economy, wants to be the "sole source for any food aid for people."
It amounts to "using food as a weapon, using the hunger of parents' children against them to prevent them from voting their conscience for a better kind of Zimbabwe," he charged.
In Mbare at the end of the day, the same innocent bystanders who were marching in the streets are finally forced to clean the streets of this poverty-stricken neighborhood.
Why? President Mugabe is planning to come for a visit. As they clean, they sing Chimwe ne Chimwe Chinenguva Yacho, which means "Everything has its own time."
Reuters contributed to the reporting of this story.