There is no flag carrier in the US. It is illegal under the Antitrust Act.
It is not, but very disrespectful and may get you into trouble.
If the flag is not your own flag, it can be considered vandalism, which is illegal. Additionally, it is in violation of "Flag Code" contained in Federal Code. Violation of Flag Code is; however, not a punishable act. To read the "Flag Code," visit the Related Link.
No, flag buying is not illegal.
It is not illegal, per se. It would be very disrespectful and a violation of the US Flag Code. However, the Flag Code holds no legal standing and includes no penalties for violations.
No. The 'flag code' is an advisory set of rules, they are not laws. No crimes are committed if you deface or destroy a US flag.
No it is not illegal. Several years ago the Supreme Court ruled that it was freedom of speech and that the 1st amendment protected someone if they burned the flag. It is a form of protest.
The Flag Code is a set of advisory instructions, and while it is part of federal law, it is not illegal to go against it. There are no penalties for failure to comply with it, and indeed, that would be unconstitutional. In the context of the Flag Code itself, no other flag should be flown above or at the same height as the US flag (Texas is often wrongly stated as an exception to this).
Illegal immigrants hang the US flag upside down as an act of defiance and protest. They do this when they want a law or ordinance changed so that it will benefit them.
It is not illegal to fly a tattered flag, but it is considered disrespectful. It is recommended to replace a tattered flag with a new one to show proper respect for the flag and its symbolism.
No that action is protected as Free Speech under the US Constitution.
No, it's not illegal, but it is hostile.