A racist thug headbutted and abused hospital security guards and even spat at one after kicking-off when he was asked to leave. Homeless Nathan Brumbaugh was aggressive towards patients and staff at Medway Maritime Hospital in Gillingham on January 15, magistrates heard. When security personnel were called to deal with him, he not only headbutted one but he spat at another, catching him in the eye. The 32-year-old then went on to be racially abusive and when police arrived he started calling them vile names too. Brumbaugh, who is from the Medway area, was arrested and charged with racially agg…