Why Continental should apologize

We are never short of controversies. India's former President Dr. Abdul Kalam was frisked by Continental security staff at Delhi Airport prior to boarding a flight to US. Since then there has been articles in support and opposition to if Continental was right to do so. First of all he is not any other "Government appointed VIP", He is an ex-President of India. I don't think American ex-Presidents go through security checks in America or outside. He is not some minister that you would need an ID card to find out. He should have had some security clearance. Even if Continental had legal rights to frisk anyone they want they should have been cautious who they pick. And even if legally they are not required to, Continental should apologize to probably the best President India had since 1960s as their moral responsibility.