Let's look at this logically:
All religions are inherently dangerous because they historically encourage people to do things that are dangerous or destructive in the name of their religion
All religions are also inherently subversive because they typically push for more power for their religion at the cost of all others that are not part of it
All religions are inherently dictatorial because they have some chosen leaders or few that lead the religion without any control or discussion from their followers
All religions try to control and subvert representative law and governments they do not already basically own because they believe their religion should have majority control of it
Most religions (rather than just spirituality) do not work according very simple and clear logic, e.g. "no harm to others", "love God above all things and love your neighbor as yourself", "inherent protection of the weak and innocent", "freedom of thought, discussion, and expression", etc.. and I mean equivalent freedom FOR EVERYONE and not just the followers of their religion
Some religions are far more dangerous than others because they institutionalize these above dangerous and destructive tendencies at their core
The more a religion institutionalizes these above dangerous and destructive behaviors either overtly or covertly (and there are religions that do this covertly so as not to be seen publicly as doing these behaviors), the more dangerous the religion is
Now ask yourself, where does Islam fall into this spectrum? Then you have your answer.
People are not inherently bad regardless of the religion they profess, but religions and ideologies are more dangerous than anything else on the planet since they subvert true logic and reason. People do insanely horrible and destructive things based upon religions and ideologies. These people are even convinced that what they are doing is the right thing even if it has absolutely no logic or proof to it whatsoever. This is the true danger of religion and ideologies (e.g. communism, atheism, socialism, anarchism, technocracy, etc.) They must be based at their core upon full and permanent personal freedom, logic, and thoughtful communal discussion and expression FOR ALL, otherwise they are inherently destructive by their nature.
RE: Is Islam a dangerous religion?