#BelieveAllWomen was in fact a real thing, a year ago....
Back then, the status quo was "if you're a woman and you got raped, good luck getting justice".
Believe everyone when they say that they were assaulted, full stop. Everyone is entitled to compassion and care. In terms of making sure no one else is assaulted by the same person who assaulted them again? Collect all evidence, with all care, every single time, process it in a speedy manor and let the usual standards of criminal justice apply, as they always must. Anything less is a direct menace to society.
If you are not in a position of judgement or power, give all parties the benefit of the doubt -- accuser and accused -- and show compassion. Especially if they are personally right in front of you.
If you are in a position of judgement or power, like a reporter, a judge, a prosecutor, or a juror; then use a fair and impartial process.