Dr Mumba says pardoning the activists will act as a means of creating an enabling environment for dialogue and unity in the country.
Dr. Mumba told Q fm in an interview that the solution to Barotseland issue does not lie in the way the Patriotic Front government has handled the matter.
He adds that the problems in Western province are a creation of the Patriotic Front after failing to fulfill its promise on the Barotseland agreement.
Dr. Mumba says if the PF government was willing to talk and consult on the issue of the Barotseland it would not have escalated to the current situation.
And Dr. Mumba says Zambians should decide themselves whether or not to attend national events such as independence celebrations and that no one should dictate to them.
He adds that President Michael Sata should not wait for national events to show that he is willing to work with the opposition, stating that there is need real interaction between the Patriotic Front and The opposition.
UPND leader Hakainde Hichilema has urged Zambians boycott Independence Day celebrations saying there is nothing to celebrate when the majority Zambians are suffering