Question: 1- Regarding the issue of cursing the religion is the person who does so judged immediately to be a Kaafir (disbeliever)? Is there any distinction regarding cursing religion as religion? Does such a distinction exist when women and children curse the religion?
2- The issue of a person being excused due to ignorance, for ridiculing the beard, the Niqaab (face veil), the Qamees (long shirt), or Muslims; also the issue of cursing the religion, is ignorance accepted as an excuse or not?
3- The issue of being excused due to ignorance in regard to offering `Ibaadah (worship) to graves or Taaghoot (false gods), can people who do so be excused due to their ignorance of them?
Please enlighten us with the knowledge that Allaah has bestowed upon you on these issues and also on the issue of fighting religious activity, will a person employed for that purpose be excused due to their ignorance or not?
4- The issue of establishing proof against a Muslim who offers sacrifices to anyone other than Allaah, or makes Du`aa’ to anyone other than Allaah, or supports Taaghoot, can an ordinary Muslim who is well-informed about such matters establish it? Are there other conditions for establishing proof?
Answer: 1- To call people to Allaah with wisdom, fair preaching, arguing in a mild way is an obligation enjoined by Sharee‘ah (Islaamic law). Allaah (Glorified be He) says: Invite (mankind, O Muhammad صلى الله عليه و سلم) to the Way of your Lord (i.e. Islaam) with wisdom (i.e. with the Divine Revelation and the Qur’aan) and fair preaching, and argue with them in a way that is better. Truly, your Lord knows best who has gone astray from His Path, and He is the Best Aware of those who are guided.… read more here.