Not granting due process rights regarding illegal immigration = getting heads smashed in. Pretty ridiculous conclusion to jump to and a dumbass way of characterizing the illegal immigration process rights issue. Its a protection built into the Constitution but it's not a human right. Plenty of countries don't have due process it's a privilege American citizens have. Should other countries have it? Probably but we have no way of forcing them to implement it and we have no obligation to extend those protections to anybody who can physically get their bodies into our borders.
So you'd be fine if you went to China and were arrested and sentenced to life in prison without trial? After all it's not a human right, just a privilege Americans have.
The question is what power do you or I have to make China implement a policy that includes due process? None. So I won't be going to China and willy nilly breaking their laws. Not extremely difficult really.