That is correct. Islam did not spread by proselytism, like Christianity but by the sword. When Islam first escaped out of Arabia you got three choices. 1 convert to Islam; 2 pay the jizya tax 3 execution.I don't think they hate Christianity as such..
The reason why a mass movement of islamists from the near/middle east, Asia and Africa into Ireland is so dangerous is that their religion demands, as a central tenet, that they offer the chance to 'unbelievers'... us... Irish citizens... to convert to Islam... the only true religion.. In their opinion.. To refuse or to ignore the offer is to condemn yourself to death.. in Islamic eyes..
Living peacefully side by side with non muslims, having dialogue with muslims that does not lead to their conversions and accepting that non muslims have different sincerely held beliefs than you are not in their belief system.. Ever..