at what point does any belief cross a line and infringe upon the rights and freedoms of others who may not believe the same?

Beliefs cross the line and begin to infringe on the rights of others when they take the form of persistent unwelcome proselytizing. American citizens have the right to believe whatever superstitious nonsense they prefer, but no one has the right to force their beliefs on other people.

When it physically demands someone to obey/convert or face immediate physical consequence.

That's when it crosses the line.

Sadly though, it seems like a lot of people think that if I say "you *should* consider my beliefs and why I believe them", I am somehow infringing on their freedoms. Heck, I'm not sitting there with a megaphone pressed against your head in a prison cell!

Ironically however, if someone tells you not to talk about your beliefs, they're basically asserting their own beliefs against your freedoms.

A: "You should stop shoving your opinions down my throat"

B" "that's your opinion. Please don't shove that down MY throat."

If there are different beliefs than who's belief is infringing on whom? Maybe both are guilty of infringement on the other. However, at the end of the day only one will be found to be right...

Why should it! If I believe the moon is made of green cheese how would that infringe on you.

Attempting to force others to believe is another matter

When they make a law that promotes their particular religion and the rest of the nation doesn't have that as a religious tenet.

So Muslims can't say we have to wear hijab, and Catholics can't say we can't use birth control, and Right Wing Christians can't say gays can't marry. And Jewish people can't ban pork products.

It is blasphemy to Muslims to make images of their God. It's not for Christians. It's good to respect things that are part of other people's religions.

Heaven is not a big campfire where all beings regardless of actions/beliefs sit around roasting smores and singing "com ba ya". It's an exclusive club, but membership is open to all for a limited time. Life is a precursor to heaven/hell. deal with it.

A person can know with certainty the Catholic Faith is the One True Faith if he or she recites daily and with care the angelic psalter of the great Mother of God, Mary most holy.