Final answer:
The sender or source of the #TacoBellFriendsgiving campaign is Taco Bell. This campaign targets Millennials and illustrates the widespread influence of social media on marketing, social change, and political expression.
Step-by-step explanation:
The sender or source in the context of the #TacoBellFriendsgiving social media campaign is Taco Bell, which is also the brand being represented. With an aim at targeting Millennials during the holiday season, Taco Bell has crafted a campaign that resonates with this demographic's inclination towards social media engagement and novel experiences.
Social media has become an integral part of marketing strategies. The ability to adapt and create compelling campaigns, like Taco Bell's #TacoBellFriendsgiving, helps brands stand out and fosters a sense of community and belonging among their consumer base. This strategy aligns with the broader trend of social media shaping social change and political expression, as seen in other movements and events shared and organized through these platforms.
Examples of the powerful role of social media include the role it played in Obama's 2008 election campaign, various fundraising efforts such as the one for Haiti in 2010, and in social movements like MeToo and Black Lives Matter. These instances highlight the capacity of social media to not only build brand identity but also to mobilize and enact change at large.