@coldjoint,
The 'bs,' excuse our language, is expecting spiritual warfare to be limited to within an individual's mind and heart without it filtering out into outward behavior. Some people understand this and seek to ban and control religion as a way of controlling violent tendencies in people with moral resolve.
The reality is that humans and even animals can't function without discipline. Liberalism/relativism wrongly assumes that a structure of society can be created where people can do whatever they want and all the harm can be controlled, but this is not possible or realistic to imagine. We are all disciplined in various ways by nature if we aren't first protected from ourselves by family, friends, and/or authorities.
Once upon a time, children were morally disciplined and guided by parents in youth, and this led many people to behave in civilized ways that prevented conflict and violent outbreaks among adults. Nowadays, the world has become more connected and there are some people who are ignorant of their lack of discipline and the effect this has on others around the world. The same discipline that prevents someone from stealing also makes them angry when they see others stealing.
Think about the new testament stories of forgiveness and mercy. There were instances where people were getting ready to stone sinners to death and Jesus implored them to forgive them and allow them to live. Those people who were ready to stone the sinner were not terrible people but rather good people who get very VERY angry at other people for not being good.
You should realize that this is a general aspect of human existence. It is the reason so many people hate Trump, for example, i.e. because they think they are good people and he is bad in ways that they can't forgive. Some people want to impeach Trump and others probably wouldn't mind stoning him and such people are not any different than any muslim or other person who forgets that they are also a sinner and that forgiveness and mercy are bestowed on them as much as they should grant it to others.
Islam indeed honors God as 'most merciful' and honors Jesus as a prophet, so you can't accuse Islam of being against mercy and forgiveness. Whatever violence it is you are focusing on thus must be do to human weakness and not to the essential spirit of the religion. You can't take the human weaknesses and imperfections of religious followers to define the essence of the religion. What's more, when you find yourself to be superior to other people who fail morally, you are denying your own sinful nature, which is the same sin of pride that leads violent muslims or anyone else who's violent into violence. The moment you start claiming moral superiority to others, you are failing morally, so if you want to give yourself to the sin of pride in this way, that's your choice, but realize you're going down the same evil path as anyone you decry as violent.