There is no right to privacy in a public space. It is not illegal to record an area where individuals would not have the expectation of privacy, even without their consent. Therefore, this is not illegal.
If this were a restaurant, that would be a different story.
> Exceptions (one-party consent required): (1) where there is no expectation of privacy, (2) recording within government proceedings that are open to the public, (3) recording certain crimes or communications regarding such crimes (for the purpose of obtaining evidence), (4) a victim of domestic violence recording a communication made to
him/her by the perpetrator (for the purpose of obtaining a restraining order or
evidence that the perpetrator violated an existing restraining order), and (5) a peace officer recording a communication within a location in response to an emergency hostage situation.
No legally protected right. This doesn't mean it is ethical, and given that it is a protected right in other jurisdictions shows it deserves more consideration and should not be hand waived away.
If "it's legal" is the argument being used to defense a behavior, it's safe to assume it's not actually a good one.
No, "it's legal" is the argument being used to defend the "it's illegal" and "you're not allowed to" argument. The argument to support the project is that it's cool af.
If this were a restaurant, that would be a different story.