That is the essence of it, and requires little or no elaboration; people who are not intimately involved with evil (even those of us who are sinful and imperfect) will recognize evil when they see it, and, at the prompting of their conscience (and if they have courage), will object to it, and call it out, and attempt to hold it to account; hence, those who perpetuate it want to keep it out of the ‘light’.