Final answer:
The growth of militias following Obama's election was largely due to racial tensions, political polarization, and reactions to his progressive agenda. Campaign tactics that appealed to racial fears contributed to this increase, as did subsequent state measures targeting minority voters.
Step-by-step explanation:
The resurgence of militias following Barack Obama's election can be attributed to several factors, including racial tensions, political polarization, and perceived threats to certain freedoms. The sentiment behind this growth often stemmed from fear and backlash influenced by a combination of an African American president and Obama's progressive policies. The outcome of the 2008 election highlighted that race was still a critical issue. McCain and Palin's campaign tactics, which included race baiting and divisive rhetoric, played a role in polarizing opinions and indirectly contributing to the proliferation of extremist groups.
After President Obama took office, there was a continuation of this polarized political climate. Despite his efforts to promote unity and diversity, President Obama faced significant opposition from conservative circles, leading to a slow decline in support from some liberal demographics. Additionally, various states enacted measures restricting voting in minority neighborhoods, which further indicates the divisive nature of American politics during his tenure.