Religions are going to try to destroy other religions because they think theirs is the correct one to believe in. I think it has been like that for a long time in history. And it will always be like this forever.
The problem is with many false beliefs that are used to prevent people from knowing the truth. We don't discard a real gold because of many fakes in existence. The solution to the problem is to find the truth and hold on to it. How do you know the truth? Simple: by its fruits. The fruit has to be good. Go through the doctrines and their deeds. It will be consistently true and good. It will also be backed with Great Power, better still by Miracles to prove they are good and actually backed by the CREATOR of the Universe
In regards to violence, there are people assigned with the task of punishing wrong doers. The violent ones are the wrong doers. If the whole event is recorded, we don't say the record book is evil and then foolishly ban it unless it supports the evil. The readers shouldn't just be shown the part where law the enforcement agents are punishing the wrong doers. They could end up thinking the agents are the evil or violent ones and the record book supports them. They need to read about the whole event to understand what is actually recorded.
It's not a bad thing for the good or truth to punish or destroy the evil/lies. It's not a good thing to let the evil be and not have it punished. This is part of the reason we have the law enforcement agencies in the first place. We don't accuse them of punishing or destroying other humans when we see them doing their job. But it's OK to accuse those who go about it lawlessly or do it outside the law.
So when you read or hear about religious "violence", be sure it's justified and according to the law (a just law). Without law enforcement evil will spread.
Even in the microscopic level in/on human body the cells constantly war against evil to keep the body healthy and prevent it from being conquered by invaders and traitors. It won't be fair to accuse the cells of wrong deeds whereas they are doing the jobs they were created to do.