R.I. Gen. Laws § 11-15-7: Display of foreign flags on public buildings.

It shall be unlawful to display the flag or emblem of any foreign country upon the flagstaff of any state, county, city or town building or public schoolhouse within this state; provided, that when any foreigner shall become the guest of the United States, or of this state, the flag of the country of which the public guest shall be a citizen or subject may be displayed upon public buildings, except public schoolhouses. Every person who shall violate the provisions of this section shall be fined not less than twenty-five dollars ($25.00) nor more than one hundred dollars ($100).