For example, let's assume that we only have three hostile players in games, one scum, ChopBam, and whoever is using the virus.
So there's a max of 3 hostile actions in a night.
Now, let's say we roleblock scum, but both ChopBam and the virus player use a hostile action still. That was 2 actions and nothing to accuse scum of so far.
The next night, we roleblock ChopBam, Scum and Virus use a hostile action, based on what happened previous Scum and ChopBam have now been cleared of being hostile players, and we have to assume their's another unknown hostile in game still that we havne't seen use a hostile ability yet despite having proof that they had to have used it...