POLICE in Johannesburg as to press charges against the Congress of South African Students for an “illegal march” on Tuesday that turned violent as student went on the rampage. Inspector Mary Martins-Engelbrecht on Wednesday said about 3000 Cosas students marched in Braamfontein, some of whom went on the rampage and caused damage to property in the area. Engelbrecht said Cosas did not apply for permission to march, and this made their action illegal.