According to the LA Times, his offense was accidentally brushing into a gang member. Hit many times with a brick, he’s now in the hospital with a concussion, broken cheekbone and multiple bruises.
I’m the same age and hike along city streets twice a day. Not beaten yet, but I’ve been confronted by gangbangers, homeless, mentally ill and other potential sudden enemies. My advice to elderly and other walkers is to avoid trouble in your wanderings. Stay in well-traveled areas and avoid after-dark hikes on city streets.
If you’re in a neighborhood with a reputation for possible attack, be sure you have a charged smartphone handy and carry a small can of pepper spray. Also, if age is slowing you down, do your walks with at least one younger companion and/or large, well-trained protection dog on a leash.