Topical, given the UK Rioting that has occurred
Do not make friends with a hot-tempered man, do not associate with one easily angered, or you may learn his ways and get yourself ensnared.
Influence is not delivered to the conscious mind; logic may be, but influence is processed at the unconscious level and moves into conscious thinking where reason and logic become applied – and Justification.
At whatever level the rioters were influenced
Interesting then that the use of Social Media comes into the frame, seen as inciting riotous action because Social Media at every level will influence somebody.
There are sites like http://klout.com and http://peerindex.net that measure exactly that
Think on Social Media wrights and influence well
Image Daily Mail On-line