Truth to hypocrisy,
Have your national and local laws ordinances statutes at hand to challenge the LEOs.
Have your science straightened out and ready to speak to. Like mRNA is a cellular therapy not a vaccine. Equivalent is not equal.
Have the written copies of emergency authorizations and regulations available. For instance EUAs are invalid if there are known curatives available.
Your conversation may not end with you winning, but you will have planted doubt about their hypocrisy by inserting a grain of truth.