Jetblue and Virgin appear to have more consumer-friendly policies: https://lnkd.in/gZ6AsrR
I don't understand why United didn't keep increasing the value of the replacement voucher above 800 USD until someone accepted. Whatever the amount, it would certainly be cheaper than the cost to its reputation. Also, why are the security forces complying without questioning their role or doing a quick investigation and making their own (nonviolent) recommendations?
Americans are so jaded, they're saying they'll still fly United and they're looking forward to the discounts due to the PR fallout. I keep trying to warn people: a nation drowning in debt is not truly free, because "free" choices necessitate placing the financial self-interest principle above all else, even morality.
Update on April 28, 2017: United announced changes to its passenger removal process and passenger compensation guidelines.