Can police do this

It depends on WHERE you put the "name" - you cannot have anything on the SCREEN that violate the law (tint and obscuring visibility)

Tinted (anti-glare overlay) at top is allowed to reduce glare, but i think it has to comply with tint regulations

as for his point about it passed inspection. those stickers could have been placed AFTER the inspection certificate was issued.

Further the inspection office grants or denies permits/license; it's job is not to "enforce" violations of the law, that is what the police (whiteshirts) are there for.