if he/she did mistake or annoyed you one time two times three times but if he/she always annoy you on a daily basis and this is part of their belief then how can we forgive and not hate?
Nic if some one curse your father or mother everyday would you like this person or forgive him/her?
You might speak with him/her first and if this talk did not work out and you brought other people and it did not work also, I am sure you will not like this person especially if your father or mother did not do anything bad.
Shiites are putting a partner for God and this partner is Ali (God bliss him), when there is a problem they say Oh Ali God bliss him), but we as sunni Muslims say Oh God.
In Islam one of the most important principles and beliefs is to believe in one God and ask the help from him first without putting any partner.
Then after asking the help from God you can go and speak to a person to help you when you are stuck in a certain problem.
Answering gensis question, the killing threats should not be there when some expresses his/her opinion.