Why is meditation making me more angry? Can someone tell me what's wrong?

I am extremely new to the art of meditation in general.

My mind, in general, is always cluttered with either office worries or personal worries.

When I remove my worries slowly via meditation (i.e. emptying my thoughts), I tend to be peaceful.

But, during this state, if I encounter a situation that irks or annoys me, my reaction is much rasher or blunt than if I don't empty my mind.

For example, after emptying my mind, I saw my son standing in front of the TV, then I grabbed his arm and brushed him aside. I would not have done this if I had not emptied my mind.

Also, I noticed that my attention and concentration is much stronger after emptying my mind, but my compassion or empathy also gets reduced proportionately.

Can someone help?
As one Tibetan lama explained in one lecture I attended, this type of anger comes from attachment to a certain form of clarity.

Because in meditation you experience clarity born of unification of mind (lack of inner conflict), when in post-meditation a conflict between "is" and "should" arises, attachment to clarity leads to suffering, rejection of which then manifests as anger.

Read up on tanha (craving) and the second noble truth, then watch yourself carefully millisecond-by-millisecond and try to catch the moment just before the anger arises. For this to be possible you may have to establish mindfulness of body first.

More broadly, a usual problem with beginning meditators is so-called "spiritual materialism". If one sees oneself as (secretly) superior to others, one's practice becomes a (secret) way to confirm one's superiority. This leads to irritation due to (projected) imperfections of others. This is likely why your empathy is reduced. You should be stalking and murdering your ego, instead of feeding it.

Unfortunately with increased popularity of direct methods in the West, like meditation and chakras/energy-yoga, problems like yours are bound to get more common. Opening the floodgate of Emptiness without having built a strong foundation of Discipline can only lead to Rudrahood. I personally am a big proponent of at least 5 years of Sila practice before one is introduced to meditation or energy-yoga.