It's simple. You have nothing to support your statement and this is your way of backing out of it.Not 'can't'. 'Won't'. I gave up trying to convince brain-dead righty diehards a long time ago. I have no interest in the futile pursuit of meaningful discussions with them because they're incapable of it. The facts are plentiful, easily accessed and available. It is you who is spewing memes and myths here; your whole purpose is to muddy the message for political purposes, and your side uses lies, misinformation and wholesale horseshit to do accomplish this. Your many stupid threads here, including this one, is a perfect example of it.
If unions were needed, the employees wouldn't opt out of contributing to them every time they're given the opportunity. There is no need for protection for child workers or safety conditions, as employers must provide this if they want to be competitive and retain good employees. Unions run companies into the ground because they are unaffordable.