The Society of Professional Journalists Code of Ethics states that journalists must "seek truth and report it."
There's "no other job where you get paid to tell the truth...we are detectives for the people." The late, great investigative reporter Wayne Barrett, in his last column for the Village Voice.
Because “journalism is a discipline of verification,”[1] that journalists consider the commitment to verification and accuracy a “strategic ritual” and part of their “professional identity,” which is “something that legitimizes a journalist’s social role as being demonstrably different from other communicators.”[2] A devotion to accuracy is the value that journalists add to issues and stories in the information ecosystem. Barbara Gray, Newmark J-School, The Emerald Handbook of Modern Information Management, p 421 [1] Kovach & Rosenstiel (2014). The elements of journalism. [2] Shapiro, Brin, Bédard-Brûlé, & Mychajlowycz (2013). Verification as a Strategic Ritual. Journalism Practice.