Manila is certainly not Like Bangkok which I regard as safe.
"Whitey" will get into hassle in many places in Manila! Makati is ok most of the time, but i would not go walking around parts of Makati that I am not familiar with - cos it has its share of toe rags also.

No jewellery smart phones or expensive cameras.

Avoid any over-friendly Filipino males and Females.

The latest round of kidnappers in Manila have turned out to be the police = avoid and treat with extreme caution.

Don't give the dumb-ass security "professionals" any excuse to shoot you = yes they will!

Muggings and killings by taxi drivers is high.

I think that covers most of my concerns.