Mental illness is defined from a societal and somewhat medical perspective and has changed over time. Up until the DSM-3, homosexuality was considered a mental illness. A diagnosis also does not necessarily correlate to violence. Though the risk factors increase somewhat for people who are paranoid (typically associated with some forms of schizophrenia and bi-polar d/o) as well as people who receive "command hallucinations" both of which are fairly rare; people with diagnosed mental illness are more likely to be victims of violence rather than perpetrators.
Typically people with mental illness lead lives of quiet suffering unless or until they are brought to the attention of LE or MHS staff by distraught parents or because they are behaving strangely in public. When brought into MHS, there are very limited services available and client's rights are emphasized (rightfully so) due to past abuses. Privacy is also emphasized because of the public's ignorance about mental illness and the great stigma attached to having a mental illness. When people here schizophrenia they almost instinctively think about scary people being driven to kill by voices telling them what to do (again, this is exceedingly rare).
Re: Straight from your mouths.
26Anyone who uses the terms 'irregardless', 'all of the sudden', or 'a whole nother' shall be sentenced to a work camp - Stewie Griffith
The American People will take Socialism, but they won't take the label. - Upton Sinclair
The American People will take Socialism, but they won't take the label. - Upton Sinclair