If you think cheap drones for consumers won't be abused, note there are many thousands of incidents of people purposely pointing green lasers at aircraft in the USA each year.
http://www.laserpointersafety.com/page52/laser-hazard_diagra...
It is a federal crime and hundreds of people are arrested each year and growing but idiots keep doing it - they even light up the police helicopters that come to look for them.