The maltreatment of others due to their gender ,sexual orientation ,race, age, ethnicity, or others factors is called

Discrimination

Explanation:

Discrimination (from Lat. Discriminatio - distinction) - in the most general sense, is social repression, infringement of rights or unfair treatment of members of groups of public minorities or the unprivileged majority. Discrimination can be defined as any form of negative attitude towards individuals or groups based on characteristics that are not acceptable and suitable in the conditions in which they take place. However, the concept of “acceptability” does not have a precise definition, therefore, it is traditionally considered unacceptable to restrict rights on grounds that do not objectively affect a person’s ability to exercise these rights (for example, race, nationality, sexual orientation, political or religious beliefs, largely gender) .

more than 1 person for sure

acts of terrorism occur globally. the united nations global counter-terrorism strategy was created in order to build adequate systems of support and solidarity with victims of terrorism. here´s a summary of the proposed key themes: the importance of giving victims a face and a voice; protecting their dignity; giving victims legal status and defending their legal rights; providing victims with medical, psycho-social and financial support; building solidarity with victims; improving media coverage of victims; and focusing on the link between victims and counter-terrorism efforts more generally.