Some strong words from Shaykh Muqbil, rahimahullah:
“… So it is a must to rebuttal the falsehood and to defend the da’wah while moving forward in this path of it, walhamdulilah. However, we should not remain in becoming preoccupied with refuting so-and-so or so-and-so, since they desire this from us, we should move forward (with our affairs), but in the course of giving sermons and speech (lectures), we should refute those who wish to hinder the people from goodness”.
Reference: The Murder of Ash-Shaykh Jameel ar-Rahmaan al-Afghaani, may Allah have mercy upon him as written here
AbdulFattaah bin Uthman