Our hearts is something we should never fail to pay attention to God especially as christians. The bible admonishes us to guard our hearts with all diligence because out of it comes out the issues of life. We should not live our lives ignorant of this fact. When we see people exhibits the traits of deceits and wickedness there are manifestations of the contents of the hearts. We can see this characters play out in the lives of people who don't really know God yet and accept Him in their hearts.
Someone who is in Christ and allows the Holy Spirit to take control over there hearts are not supposed to display these acts.
Matthew 6:21–For where your treasure is, there will your heart be also.
But for people who unfortunately fall victim into the hands of those that display acts of wickedness and violence, their consolation lies in the fact that God is close to the broken hearted. Broken heartedness can mean having a heart which gone through all manner of things that shatters the heart and leaves it in a terrible state. A lot of people go through this and the sad thing about this is that some of them go through it in their homes.
What we let into our hearts matter a lot. We should let things that will hurt people or things that God frown at to make its way into our hearts. When our hearts abstain from the things with Godly essence it can give room for anger. W should as often as possible prayer for the Holy Spirit to walk on our hearts.