Wiki excerpt about the movie the scene comes from:
Meanwhile, Merlin discovers that Professor Arnold has returned to work as if nothing had happened. Hart attempts to interrogate him, but a chip in Professor Arnold’s neck explodes, killing him. The detonation signal is traced to a facility owned by Gazelle’s employer Richmond Valentine, an Internet billionaire and philanthropist who has recently offered everyone in the world SIM cards that grant free lifetime cellular and Internet connectivity. Hart, impersonating a billionaire philanthropist, meets Valentine face-to-face. Hart learns of Valentine’s connection to an obscure hate group’s church in Kentucky, and travels there, wearing glasses containing a video transceiver. As Eggsy watches, Valentine activates the SIM cards in the church, triggering a signal that causes the parishioners to become murderously violent. Hart’s spy training leaves him as the only survivor. Outside the church Valentine explains what happened, and then shoots Hart in the face.
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Apparently, the “Trump character” in the movie is acting in self defense.
That. Wikipedia account of the plot is a total mischaracterization of the plot. The only connection that villain Valentine has with the congregation at the church is that they are to be his test subjects as he tries out his means of killing 99% of the hoi polloi on earth. Hart is not acting in self defense at all, but is acting along with the congregation as the sound emanating from their phones with Valentine’s chip in them cause them to erupt into violence against each other including their loved ones, neighbors, children, and themselves. The Kingsmen agent is affected as much as they are by the sound, but being a trained agent, can fend off their attacks and kill more effectively.
The Wikipedia write up implies that Valentine is in league with redneck white suremacisis, when in fact he is in league with progressive, liberals including Obama. Hillary, and other elites, including the Queen of England, all of whom have also had miniature bombs installed in their heads as part of their agreement to be in the plot to save the planet!