Final answer:
While 'Obstreperous crowds often follow a controversial president.' is a broad statement and not universally true, presidential actions do influence public reactions, ranging from peaceful assemblies to the rally around the flag effect during crises. The impact on crowds and public opinion varies with the context and specific actions taken by a president.
Step-by-step explanation:
Presidential actions can indeed lead to various public reactions, including those involving obstreperous crowds. However, the statement 'Obstreperous crowds often follow a controversial president.' is more of a generalized observation rather than a factual statement, and its truth can vary depending on the specific context and president in question.
In instances such as the March on Washington for Jobs and Freedom, we observed large crowds that were peaceful rather than unruly. Moreover, during times of international crises, the rally around the flag effect can occur, which sometimes increases presidential popularity, contrary to the idea of obstreperous (troublesome or aggressive) crowds.
The phenomenon of presidential actions impacting public opinion is well-documented, and while presidents can sometimes create a surge in public approval through their actions, this does not always translate to unruly crowds, but rather could foster unity or widespread support.