The Mormon Church does not react directly to the recent shootings that plunged the United States, but to a change in the law in Texas.
In the previous version of these "instructions", the wearing of these weapons was only discouraged and qualified as"Unseemly". This decision is not directly related to the series of deadly shootings that have recently plunged the United States.
The Church reacts above all to a modification of the law (in English) in the state of Texas, which removes places of worship from the list of places where carrying a handgun is punishable by one year in prison. From 1 September, anyone can take possession of a revolver, unless his cult formally specifies the prohibition.
Source link
https://www.francetvinfo.fr/monde/usa/controle-des-armes-aux-etats-unis/les-mormons-interdisent-le-port-des-armes-a-feu-dans-leurs-eglises_3593219.html