Abstract: The interconnections between diffuse intergalactic-scale magnetic fields  galactic black holes and other galactic phenomena have become gradually clearer over the past few years. I describe recent, relevant observations and some analysis, which show that enormous amounts of gravitational energy are converted with surprising efficiency into magnetic energy that is expelled into intergalactic space. It is intriguing that, by 1950 galactic cosmic rays and magnetic fields were understood to be interconnected on within our Galaxy. On extragalactic scales we have not yet discovered if, or how, intergalactic magnetic fields and ultra-high energy cosmic rays (UHECR‚s) might be interconnected. This latter question will be briefly discussed.