I'll ask you a hypothetical.
Suppose Biden was from Alabama. He spent his life in Alabama, aside from when he was working in Washington. He served in the state legislature for many years before he went to Washington (the closest substitute I can manage here for doing business in New York). He serves one or two full terms, then he leaves office.
A staunchly Republican DA is elected in the city where Biden spent his life. This man pledges to press charges against Biden for his supposed "corruption". Biden's long life is scrutinized unlike any American who ever was, and after a few years of searching a few things come up for which there's wiggle room to pursue civil or criminal proceedings.
They go to redneck alley and pick a bunch of jurors. Perhaps Biden's attorneys screen them for social media posts. In which case, those who aren't outright posting "I love Trump" or "Let's go Brandon" on Facebook pass the test and are empowered to decide the former President's fate. Of course, most of these people are consumers of whatever the latest narrative by Fox. Fox has been unfriendly to Biden for years, and the average person fed a steady diet of this content has biases, explicit or implicit, against Biden. If a case has been levied against him, they assume the case is rock-solid.
The Republican district attorney makes an impressive-sounding presentation that lays out whatever case Republicans have compiled against Biden. This case may or may not be airtight. Your average person can't really tell. Where there's doubt, they err on the side of trusting the case.
Finally, after some deliberating, they find Biden guilty on all charges. But let's say Biden gets lucky and they don't. No matter; the prosecutors will find something else on their bucket list and repeat the cycle all over again, until eventually they get a jury that throws the book at the man.
Does this hypothetical sound like justice to you? Would you object?
To be clear, there's one correct answer here. I wouldn't believe you if you said you'd humbly accept the outcome and not question it.