HARARE – Four Zimbabwe National Students Union (Zinasu) activists, currently detained for allegedly spraying graffiti on government buildings, had their bail application turned down Tuesday by Harare magistrate, Learnmore Mapiye. The group comprises Emmanuel Sitima, 24, Comfort Mpofu, 22, Tawanda Watadza, 24 and Lionel Wadamombe. The University of Zimbabwe students stand accused of defacing…