Ok, I've reduced what you've written to a few points.
1. Working for 35 plus years with EEO, Affirmative Action, and numerous unions, it really has to be done with some sort of mediation, and to be sure, leaving the nagging thought that the aggressor/abuser will face court and jail time, possible loss of employment, family, reputation, etc. Can't shout them down. These people have to be made aware that they can't vote rights away nor suppress them. If / When the aggressor starts their reprisal, action needs to occur immediately. Police called if necessary. In the 80's I handled a case involving the military where an atheist gay male was being harassed by the wife of his male boss. She would put religious literature on his desk, highlighting anti-gay portions. Informed others in the office what she was doing to the F**. Step 1 - spoke with her, she claimed it was her religious right (which is not true in a government position). Her boss said she would stop. She didn't. Spoke with his boss (her husband). Harassment continued. Spoke with the man's COL. No action. Made an appointment with the 3 Star General, and a call to EEOC. They sent an investigator out who's only job was to sit and observe. Within hours of speaking with the General, the woman was suspended until such time as my client got a different job. The immediate supervisor was suspended without pay as well, for 2 weeks. Personnel, the following day provided a list of jobs for him to review and choose from. He "left the building" and went to work away from all. He was compensated for a period of the time off he took (the actions triggered PTSD symptoms).
Another case involved 3 females who's supervisor was making lewd statements. Outcome? They were secretaries in a shop setting, they were transferred out of their agency to a new one. They all ended up moving up the ladder, breaking glass ceilings, and retired at 5 times the pay they were making as secretaries.
Again, the people have no voice in how the word marriage is used. It's being used in the case of a legal contract. A Christian, Jew, Muslim, Buddhist, Atheist etc can object to the use, however, the first amendment allows us to use the word. The 14th amendment allows any couple that meets the US / State requirements to be married.
Banning Sharia violates our First Amendment right to freedom of religion. It tells you how to live your life, every step. The Qur'an is holy scripture (think Old Testament, they are close to identical), and the Sunna. The Sunna is essentially the prophetic example embodied in the sayings and conduct of the Prophet Mohammed. Sharia law has been used. One example would be divorce, where once spouse may be US, the other from the middle east (say, Egypt). A US judge must determine whether he has jurisdiction and whether state law governs this dispute. If the conflict of laws of the US state requires that Egyptian law govern the issue of validity, the court would require expert testimony about Egyptian law that is based on Islamic law (Sharia Law).
You may ask if Sharia is used in U.S. courts any differently than other foreign or religious systems of law? No, it is utilized the same way as Jewish law or
canon law or any other law. Another example may be if a wife asks for a restraining order because her husband raped her. He claims that his religion allows relations whenever he demands. Local courts found him not guilty (religious reasons); but the appellate courts overturned his decision - because it was based on Sharia Law, which prohibits spousal abuse.
As long as a provision in Jewish law, canon law or sharia does not offend our constitutional protections and public policy, courts will consider it. Otherwise, courts would not consider it. In other words, foreign law or religious law in American courts is considered within American constitutional strictures. Our constitution is wonderful.
A federal court recently held that a ban prohibiting Sharia Law would likely violate the Supremacy Clause and the First Amendment, and is therefore unconstitutional.