I agree here, perhaps as the fedi we can lead the way. All news stories should be verifiable, evidence cited and backed up. If users here have the confidence to fact check and question stories, we will hopefully become a social network where critical thinking is the normal process.
A few years ago, the BBC reported on a police on the home of Cliff Richard, in relation to a paedophile story, he was totally innocent, and yet, his reputation was put at risk, IIRC he sued the BBC.
If Trump is arrested then this would surely be announced through legitimate sources such as the police (I appreciate the lack of trust in the police), appropriate information released as not to harm any court case.