Activist Boniface Mwangi has yet again accused President Uhuru Kenyatta and his deputy William Ruto of ruining Kenya's economy throughout their time in office.

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Uhuru and Ruto took over from Mwai Kibaki in 2013 after narrowly defeating former Prime Minister Raila Odinga, who contested the outcome.

In a tweet on Thursday, the seasoned activist also faulted Kenyans celebrating retired President Daniel Moi, arguing that he introduced Uhuru and Ruto to corruption.

"President Moi was a thief, a murderer and a dictator. The two thieves ruining Kenya today, Uhuru and Ruto are Moi political sons. The son of a snake is a snake, the son of a thief, is a thief. Moi wasn't a good president,stop photoshopping history," he said.

While Uhuru is set to retire in 2022, DP William Ruto is keen to succeed him as the next head of state. He has intensified his campaigns across the country.

During his tenure, Moi was linked to various scandals which saw the country lose billions of money to fake projects. He has never been prosecuted.

In his last speech during Jamuhuri Day in 2002, Moi lectured politicians on the importance of adhering to certain philosophies within political parties.

The retired President said he had no intentions to stay in power, adding that those who believed that he was power hungry were misadvised.

"I said in 1998 that I will retire at the end of the five years term and many people didn't believe. They think that power in Africa cannot be given peacefully by those serving as Presidents.

"Power belongs to people. We are just their sponsors. I want to tell the advocates of democracy that you must have principles. It's bad that some of you shift parties. Look at every party keenly before making a decision," he said.