The MDC Alliance led by Nelson Chamisa took to social media to remember late politician Roy Bennet.
“🔴Four years ago today, Zimbabwe was robbed of a true patriot, Roy Bennett, in a helicopter crash. His contribution towards the building of a new Zimbabwe remains an inspiration to many. He was a shining example of courageMay he rest in peace,” party posted.
Roy Bennett has been killed was killed with his wife in a helicopter crash in North America few years ago.
The couple died along with three others when the aircraft crashed in a mountainous area in the US state of New Mexico. One person survived.
Mr Bennett, 60, was a former white farmer who became a stalwart of the opposition party Movement for Democratic Change (MDC).
In 2004, he famously lost his temper in a parliament brawl with Zanu-PF Justice Minister Patrick Chinamasa.
Mr Bennett pushed Mr Chinamasa to the ground in a row over a land redistribution programme that saw most of the country’s 4,000 white farmers lose their land.
As a result, Mr Bennett was imprisoned for several months – an experience he described as a living hell.
In 2009, as he was due to take up his post in a new power-sharing government, he was accused of involvement in a plot to overthrow Mr Mugabe. He was cleared of treason charges the following year.
Mr Bennett left Zimbabwe for exile in South Africa, where he continued to oppose Mr Mugabe.
His death comes as Zimbabwe’s new President Emmerson Mnangagwa is promising a break with the past.