How has the three major race has changed over time

The concept of race as a rough division of anatomically modern humans (Homo sapiens) has a long and complicated history. The word race itself is modern and was used in the sense of "nation, ethnic group" during the 16th to 19th century, and only acquired its modern meaning in the field of physical anthropology from the mid 19th century. The politicization of the field under the concept of racism in the 20th century led to a decline in racial studies during the 1930s to 1980s, culminating in a poststructuralist deconstruction of race as a social construct.

dude you should crop your image so only the question shows. but   can you explain it better

new communications technology has affected the way social movements are organized because nowadays, social movements rely on social networks and the media to get different people with a similar way of thinking in contact, and thus, get them to mobilize for a greater cause.

individuals only participate in collective action when they feel identified with it. is in this aspect that social media becomes relevant, because it guarantees communication among all individuals and organizes the social actions that are going to be carried out, i.e., the social movements.

in addition, being covered by the media is important to validate the message and make it relevant in the social agenda, as well as to reach more people who can share interests, appealing to public sympathy for their cause.

in conclusion, it is by social networks and social media that social movement is given birth; by connecting different individuals with similar ideas and organizing them to mobilize for a greater cause.