Freedom isn't a list of things you can do, it's a state of being unhindered. Political freedom is a state of being unhindered by other people. This is why many of the founders were opposed to the Bill of Rights, and why the ninth amendment was added. The radical claim of the DOI was that governments are created to protect, as much possible, that natural state of freedom.
Even only a couple hundred years later, we seem to have lost the context of why their claim was so revolutionary. They were literally turning the status-quo upside down. Their idea of rights wasn't an explicit list of privileges granted to the people by government (the king). They claimed all freedom for the people and instead defined the power of government to limit that freedom with an explicit list of powers - powers granted to government by the people.
This is why it's so frustrating to hear health care, education, or any other goods and services described as "rights". It obfuscates the profound and novel conception of rights that our country is based on. I don't think it's deliberate. I think what people really mean, when they say "health care is a right", is that we should provide it via government as a taxpayer provided service (like the schools, fire depts, etc...).
And that is my point i guess. Who decides what is unhindered? What you might consider unhindered other might see as obstructionist. For example, you own land that has a river running through it that has enough to feed the farms around him. A farmer nearby wants to use the water to water his crops, but the other farmer who has access to the river says no, just because he can. Somebody's 'freedom' is being hindered.
If your point is that government exists to resolve disputes when rights come into conflict, that's certainly uncontroversial. I agree completely. That's the whole point of having it.
As for the bolded part above. Maybe that is what people really mean. And there's nothing wrong with that...
Obviously, I disagree. Which is why I'm raising a fuss here. When people say one thing, but mean another, it leads to problems. With casual followers of politics, its relatively benign. But for leaders like Bernie Sanders to make such claims is inexcusable. He knows better and is deliberately equivocating on the term to avoid making a real case for government provided health care.
It's generally understood that, as a fundamental purpose, the government is there to protect our rights. So Sanders, and others pursuing this angle, hope to have the "health care is a right" mantra accepted uncritically by voters. Once a majority accept the notion it makes it much easier to push through their plans for centralizing health care under government control. They can do so without proving why it is necessary, or a even good idea, by simply falling back on the (erroneous) assumption that health care is a right.