Altercation at the Airport

I have waited to post this event until now.  Last summer Cosmo and I did a lot of traveling.  On one occasion when we got off the plane a man started taking pictures of us.  He wouldn't stop even when I asked him.  I physically moved Cosmo out of his line of viewing and the man started yelling.  The weird part was that this man sat next to me on the previous flight and he kept to himself.  Well now he is yelling how Cosmo is not a service animal and how we are both phonies.  I was scared because this man was out of control.  No one at the airport helped, not even security.  The elevator doors opened and Cosmo and I got in.  I met up with my mom downstairs and told her to take Cosmo out of the way.  I explained briefly what had happened and told her to take him.  As Dad and I waited for the bags the man came up to me again and started yelling and taking pictures.  Again no one helped me.  I was scared because this man was seriously out of control.  I yelled for security and no one came.  I pulled out my phone and started to dial 911 and the man finally backed away.  As he was yelling it came out that his girlfriend had an asthma attack during the flight, and of course it had to be caused by Cosmo.   It was weird because on the flight up she didn't have an issue.  But I was more upset that I thought something would happen to Cosmo.  He could have easily tried to bolt due to the  screaming.  Because of this incident I have been leaving Cosmo at home more often.  So now I'm jeopardizing my life for the fact that some people are stupid.