For example, my brother was diagnosed with schizophrenia when he was 18 (now 26). Thankfully he is on an involuntarily treatment order for his medication (fortnightly injection), however there have been a couple of times where he has gone to the mental health tribunal and they have put him back onto tablets (which he can avoid by not taking).
During those unmedicated times, and even sometimes during the medicated times, he expresses intention to hurt people. For example, he has told me that he would like to kill the people from mental health as he believes the whole thing is a conspiracy and they have ruined his life.
he also sometimes gets into violent outbursts.
To date, he has not harmed anybody in any serious way, but I believe he is capable of it due to the extent of his delusions.
How would that be the fault of my parents if he hurt somebody?