A family member asked me about this one she saw on facebook, so I'll answer it here:
51. Meditation techniques all advocate repressing and denial of expressing so-called baser emotions and this leads to poor mental health and worse.
It is not a denial, it is just not encouraged. Mindfulness meditation and other Buddhist meditations involve staying in the present and observing whatever comes up; be it good or bad. It is a misconception to say that Buddhist meditations seek to "repress" such feelings. It is more of just staying in the present and seeing what comes up, not repressing anything. There have been some Buddhist teachers who have said that you have never really had a good meditation until you have one that ends in crying. So it can come up in Buddhist meditation, it is just not encouraged.
In Emotional Intelligence, Dr. Daniel Goleman wrote that those who "get it off their chest" can enter a “flooding” state, where there is an overwhelming amount of anger with adrenaline, where no rational decisions can be made in this state and it needs a long recovery time before settling down.