Why does Steve think the prosecution is parading witnesses with terible character in front of the jury?

Steve believes the prosecution is parading witnesses with terrible character to undermine the credibility of the defense and sway the jury's emotions. By presenting individuals with questionable backgrounds, the prosecution aims to paint a negative picture of the defense's case, suggesting that if the defense's witnesses are flawed, then their testimony can be dismissed. This tactic is often used to distract from the actual evidence and shift the jury's focus away from the facts of the case. Ultimately, Steve feels this strategy is manipulative and unjust.