更新1:
Just to address the cocky answers... some women asked me this because they are stopped at events more frequently by cops than other people and they think they're getting ogled behind those shades. And just to clarify for anyone who comes across this in the future, the sunglasses are actually considered safety equipment and they do not have to take them off. There are provisions for "in plain sight" which also allow them to look where ever they want without violating 4th Amendment rights.