You mean sort of like when the US refused to let its bankrupt banks fail? Or how about when the US abolished short selling of financial securities? Do you remember that?
Yes. ALL manipulated markets are bad. But the US has never done anything like shutting down the market just because of 5% drop. Commies think they can control everything. They are wrong.
All national governments interfere in their markets to some extent. That doesn't make them communists. PDT rule is 'nanny state' : "We're going to protect you from yourself". Just as stupid and wrong as alcohol prohibition. Most drinkers can hold their liquor. Most day traders don't bet the rent money. Legislating for the pathetic exceptions and applying it to all is just wrong.
they are not protecting you, they are protecting the integrity of the industry. And it looks bad if too many traders start with 25k and lose most of it in a short amount of time.