Before visiting a mosque, please google the phrase "taqiyya and tu-quoque" and arm yourself with knowledge. Be prepared to ask -- sweetly, in an Infidel-Wants-to-Know Mode -- about Muhammad's marriage to Aisha when she was nine, about the assassinations of Asma bint Marwan and others, about the massacre of the inoffensive Jewish farmers of the Khaybar oasis, about the decapitation of 600-900 helpless prisoners of the Banu Qurayza, and about so much more. Be sure to mention the Hadith.
Do not let the presentation to those Infidels (hmmm, doesn't that spicy chicken and that pita, and then the honeyed dessert, all waiting for us afterwards, smell good, I can't keep my mind off it, how nice these people are, what good hearts they have to invite us in to share their food and their faith) be allowed to finish without making the most that you possibly can out of that "question time." And bear in mind that you will only be called on once, so you had better have your questions ready -- not really to be answered, but so that they can provoke thought and unease in your fellow Infidels who have come, unlike you, without any mental weapons whatsoever.
Ask about the relevance of what Muhammad did and said for today's Muslims. Ask why he is called in the Qur'an "uswa hasana" and in Islamic tradition "al-insan al-kamil"? If told such things as Muhammad's marriage to Aisha must be "put in the context of their times," don't forget to ask why virtually the first act of Khomeini in Iran was to lower the marriageable age of girls to nine.
Oh, and ask about the concept of the "Dhimmi." Ask what was required of Christians and Jews as non-Muslims under Muslim rule. What did they have to do, in order to remain alive, as "Protected People," rather than dead, as Unprotected People, or to prevent their being forcibly converted -- as opposed to the slow conversion, over time, which was usually the only way open to them to escape the onerous, sometimes unendurable situation of being a dhimmi.
And afterwards, when the talk and question time have come to an end, and when other Infidels come up to you, quietly, to thank you for speaking up and speaking out, and expressing their own inarticulate unease, tell them a few of the books you have read. Tell them about Bat Ye'or, Ibn Warraq, and Spencer. Tell them of this and other websites (www.faithfreedom.org, www.dhimmitude.org, www.answering-islam.org, for a start). Agree to take their names and phone numbers or emails, and to send them a further list so that they, too, will not merely rely on the nonsense and lies fed to them by the soft-voiced propagandists.
Be sure, that evening, to count how often those propagandists mention something about "the three abrahamic faiths" and the "three monotheisms" that "have so much in common." See how often one of the Muslims present tries to use crocodile-sympathies to deplore the mistreatment of Jews by Christians, as opposed to what he will claim is the "tolerance" of Islam, and do agree with him on one point: that Islam manages to mistreat all non-Muslims.
See if there is any mention of Hindus, or perhaps bring with you to the evening a Hindu colleague of the completely unfoolable kind, so that his mere presence in the audience will unnerve the speaker and others. See if there is mention of the 60-70 million Hindus murdered under Muslim rule, and if not, point out that strange omission sometime during the evening.
Oh, and after that? When you all go to the room with the steaming table of that chicken (or lamb) and pita bread and that delicious baklavish dessert? Go right in, along with the other Infidels, mingling with the handful of Muslims in that mosque who agreed to come out that night and agreed to allow the defilement of their mosque by these Infidels, for it was all in a good cause: defending, shoring up, the Faith, until such time as it becomes strong enough here and in other Infidel lands, so that no more Mosque Outreach, no more phony politeness and sweet reason, will be needed with these Infidels.
Break the silence of the lambs. But not by bleating. By studying in advance just enough about Islam -- enough to make things hot that night in the mosque, and not only for that waiting chicken, that pita, that rice.