They call that feeling schadenfreude, not necessarily a bad thing, provided they had it coming and fucked themselves. It's either that or they fuck you and everybody else including themselves. They somehow got it in their minds that Trump is gonna "git" those people they hate and resent, they anticipated a little schadenfreude themselves. That need is placed before all other considerations, faith, patriotism and even there own welfare and that of their families. Someone posted a brain scan study on how retribution is similar to addiction, people do the same kinds of things with their priorities. Most junkies live in anticipation of the high, not high, that becomes somewhat disappointing and unfulfilling at a deep level for many.
It is the anticipation of pleasure that is the real motivating factor, not the pleasure itself, that might disappoint them. We all anticipate Trump in chains, but when it happens there will be more relief than pleasure, many will feel sorry for the broken creature who shuffles out of court to a remaining life of Hell in solitary. I will feel sorry for him, but I will weigh the people he destroyed and murdered in the balance too and if the law said to put him down like a rabid dog, I would have no objection. Actually I hope they drag him out of court kicking and screaming in rage, it's hard to feel sorry for the angry, it tends to close off empathy in others and that would be a good thing with Donald.