When we believe in thoughts, we have many reasons for not being fully engaged...
We make people into "others", and even "evil" or an "enemy".
We may believe that everything is perfect as it is, and there is no need to be engaged.
We avoid engagement through distractions.
We have an exclusive and limited circle of concern and compassion.
We are concerned with our own salvation, either materially or spiritually.
We think we cannot be fully engaged until we are clearer and more effective.
And all of these are just beliefs in thoughts...
When all this falls away, there is just natural engagement - on behalf of all those who suffer and especially those without a voice.