The instances considered illegal hacking from the choices given are:
B. Hacktivism (which often involves unauthorized access to systems for political purposes) E. Hacking just for fun (which can imply unauthorized access regardless of intent)
White hat hacking (A) typically refers to ethical hacking done with permission, and penetration testing (C) and bug bounty programs (D) are also legal activities conducted with consent from the organization.
Thus, the best answer is: B and E.