score:2
Decision to commit suicide is an individual decision. So it does not cause Garuka kamma for the one who does the shaming unless one had the intention to make them commit suicide.
There are also Garuka Kusala Karmas like Jhanas and Maggapala.
Upvote:0
Killing your parents is a Anathariy Karma. This is worse than Garuka Karma.
Instrumenting this directly or indirectly results in the same Karma.
Bottom line is that you should be always good to your parents.