Nowaydays, there is a lot of people who have studied Chinese martial for few time(sometimes a cup of months or years) and labeled themselves 'Masters of Kung Fu,' and returned to their countries and create club with many students and teach fake kung fu.
They just do a commercialism of martial arts. What is really dangerous concerning what they do is that people trust them! People believe that they have experience! And a lot of problem come from that. Nowadays there is too much people who just spend their life in youtube, google or wikipedia and pretend to be martial arts teachers. One must be more humble and more true in the relationship with other.