I don’t think the major networks and print media are outright biased in their reporting.... In the sense that they knowingly take sides on purpose....
Obviously cable outlets like MSNBC should run a disclaimer “We are ass clowns “ before broadcasting their shows
What they do is not report the other side or leave out information or not even report at all important aspects of stories... When they are unfavorable to their POV...
The Columbia School of Journalism, for the last couple of generations -- make that three or four generations -- has surveyed entering J-school students about their reasons for entering journalism.
Starting in the late 40's, and certainly in the 1950's, Columbia noticed a rise in the proportion of students who cited, as their main reason for choosing journalism, a desire to "improve" society and benefit their fellowman -- liberalism, IOW. (And Marxism -- Columbia was a "little Red schoolhouse as long ago as the 1930's, so said ex-Communists like Louis Budenz.)
Vance Packard, in one of his social-criticism books in the 1960's, noted that the proportion by then had risen to over half, nearly 2/3's, of incoming classes. The proportion rose to 90% in the 1970's and 1980's and has been pegged-out ever since.
Confirming this takeover of journalism by ideological liberals and "progs" (neo-Stalinists), journalists who continued -- and continued to this day -- to profess themselves "independent", voted for George McGovern, the old Henry Wallace delegate and "prog" Stalinist, by 9:1 in the 1972 election that saw Nixon sweep 49 States.
It would be nice to know what percentage of "journalists" voted for Obozo. I should imagine it was something like, well, 100% -- total commitment, total true-believer over-the-cliffness.