I won't go into details(this stuff is kept secret). But from my experience when there is a rash of suicides or heart attacks then a evil forces(black arts) are very possible. Direct experience for me, we were told to keep secret. These things are actually common in business and politics, both parties.
I’d suggest that in Christian circles, it be better known, because Jesus Christ can and does conquer these powers. And the need should be emphasized.
Prayers should be made for rulers and all in authority that we will live peaceful and quiet lives in all godliness and holiness. Or putting it another way, that there will be a brake on wickedness. Maybe there needs to be more of this kind of prayer. We can complain about how wicked these people are or we can praise God for how good He is and beseech Him to neutralize the power of the evil spirits that energize the wickedness.