The corporations own all elected officials (executive, legislative, and judicial) and MSM except some ostensible, powerless dreamers who think they can make a difference nibbling on the ephemeral periphery. The most rational and bravest voices in media (Hedges, Chomsky, Nader, Maté, Blumenthal) are currently ostracized as effectively-mute dissidents, conflated with conspiracy theorists and religious zealots for their crimes of factual, professional reporting.
"It is difficult to get a man to understand something, when his salary depends on his not understanding it." ― Upton Sinclair
The prevailing filter bubble of the bourgeoisie and the rich is intent on remaining secure at all costs, assassinations included. Just look around the world where journalists are murdered most and then where they are deplatformed.