The times they are a changing and this threatens conservative people whether political conservatives or religious conservatives and the ones who feel the most threatened lash out. The craziest of them are the cruelest and are capable of the murder. For example, when Christianity threatened the Roman emperors with their teaching of their being only one god and refusing to worship the emperor as a god, the emperors had them put to death. The same is happening today with Muslim conservatives. They feel their religion and way of life is threated by the modern world so some retreat deeper into a more and more conservative Islam and others join radical groups and kill the supposed threat. In Christianity, people also dig their heels in and cling to a more conservative brand of Christianity, others fight to conserve their way of life in the political arena and often claim victim status as in the people who refuse to provide services to gay couples.
Religious conservatives hear the faint death knell of their way way of life and that unsettles them. In time, most will grow and change with the times; the rest will die out like dinosaurs.