Other countries, other customs. So, for example it is not advisable to move in public areas when wearing any kind of mask if you are older than 16 years, even during halloween. A fact a certain 18 year old guy named Matthew David Lopez from Tampa, Florida had to discover lately. For some unknown reason he decided to walk along a public road with friends while wearing a horror clown mask with a red orange wig. This got noticed by a police officer driving by, leading to the arrest of the mask wearing teenager. Actually, he didn't stay long in prison and was released in the meantime for a bail of 750 Dollar, but that doesn't change that fact that the USA seem to have some quite strange laws.
