We get rights from ourselves. Society generates them.

First, one must understand what a "right' is. It is an allowance from the society one is within, as to what one can do.

For instance, the U.S. government has given its citizens the right to free speech. It is entirely dependent on where one is located. This right to free speech ceases for a person once he or she enters a country that does not allow it.

To say that they are God-given rights is not accurate - because, one would think these God-given rights would be ubiquitous, but they aren't at all.

Additionally, where in the Bible does it say one has a right to free speech, or the right to due process, or the right to remain silent? Those came from us, not the Bible. It is sort of an application of Occam's Razor. If we are perfectly capable of creating rights, why does a supernatural entity need be involved at all?

We, as a species, are capable of establishing rights ourselves. Many people seem to get hung up on the idea that "rights" either aren't valid, or don't exist, unless they come from some supreme authority.

They're partially correct - rights aren't worth the paper they are written on, if they aren't enforced. Humans do the enforcing (most of the time).