Not so much about liberty only. Life standard overall, access of food, clean water, power and fuel, infrastructure, economy and so on. No matter how shitty you can think USA is i bet you would rather live there than Ethiopia, Yemen, Afghanistan and so on.
What needs to be done shall be done.
Russia showed her true colours, China openly send Muslims to concertation camps while supressing any democratic revolt in Hong Kong, Iran killed a girl because she didn't wanna wear a burqa and the list goes on.
Once again, call USA shit all you want, but I will pick USA any day of the week as police of the world rather than any of the above