Both had unhealthy relationships with their mother.
MR was close to his mother. The complete opposite of SC.
Both killed their mother.
MR claims he killed his mother by accident. The complete opposite of SC.
Both were Schizophrenic.
MR had no history of mental illness. SC was diagnosed with paranoid schizophrenia.
Both had access to weapons they really shouldn't have.
MR applied for a gun licence which was granted. SC had access to firearms due to the family farm.
Both committed a mass shooting.
MR killed strangers at random. SC killed her immediate family.
Both killed themselves.
Agreed
"Dr John Hamilton, the medical director of Broadmoor, the Berkshire prison for the criminally insane, was of the opinion that Ryan was probably suffering from a form of schizophrenia and was certainly psychotic at the time he carried out the killings. He diagnosed Ryan’s disorder as paranoid schizophrenia, adding that he was in all likelihood suffering from paranoid delusions too. Dr Jim Higgins, a consultant forensic psychiatrist for Mersey Regional Health Authority, and one of the country’s leading authorities on mental illness, agreed with this diagnosis: ‘Matricide is the schizophrenic crime - that is an aphorism in forensic psychiatry. Ryan was most likely to be suffering from acute schizophrenia."
This is all after the event. MR was not diagnosed with any mental illness hence he was granted a firearms licence.