He said those activities were precursors of the 2024 general election, and thus demands that media practitioners be fair, balanced and guided by the code of ethics.
Mr Dwumfour made the remarks at a thanksgiving ceremony in Accra.
The event was organised by the leadership of the GJA to thank God for a successful and fulfilling year in 2022.
The GJA President also entreated the media to promote and support local private companies so they could create more jobs for rapid economic development.
He said the private sector was the engine of growth and needed the support of the media to excel.
“As journalists, one of our cardinal responsibilities is to protect and promote the interest of local companies that are legitimately working to complement the efforts of government,” he stressed.