On several occasions, I have seen someone post something religious on social media, only to garner a response of "keep your religion to yourself." Now matter which side is acting in more ignorance (likely both hold an equal standing), I find this response to be quite amusing. Humans are naturally emotive as to their standings and social media is a place where people are encouraged to share those standings. Even more amusing is the fact that one can simply select those with whom they share and receiving these statements of standings. One does not go to a democratic rally if one is highly opposed to democratic standings, especially when they have the temperament of an adolescent.
Religion, as with anti-religion, shapes our worldview. Someone who believes in God will have a very different view on life and their role than someone who does not believe in God. Likewise, someone who believes in a different god will also hold a different view. These views emerge out of everyday conversation--everything from the dreams we have, to our political standings, to our job. One who demands that someone "keep their religion to themselves" basically is asking the other to shut up, because conversation absent a worldview is almost an impossible task. One might be able to discuss the weather, possibly could converse about the quality of food, and only likely could talk about business. Nearly all other topics, especially those of any intellectual substance, would be out-of-bounds. Now, Facebook basically is a cesspool of human intellect, as these rules would demand, but I digress.
No this person is not asking to keep worldviews out of conversations, just their worldview. This person seeks the refuge and comfort in one's own views that ignoring another's provides. While likely the "original poster," as one might call them, spoke poorly and also in ignorance, one cannot stop man from being stupid on occasion. The tendency of humans to say stupid things, especially concerning things they are passionate about, should not bar one from speaking further about a topic. If this were out into place, none would have the authority to speak but a select few who were either uninterested or unaware.
So I ask you all to be kind and not respond to ignorance with ignorance. While fire can be used to fight fire, ignorance only serves to fuel itself, especially when it is fueled by multiple sources. And thus it blazes ever-onward, slowed only by well-meaning, intellectual conversation. Do not tolerate poor thinking in discussions, but do not condemn those who do it to more extreme views. One day you might find yourself well-entrenched in a battlefield that has been hard fought for no victory.