Because he wanted France to lose its war against Austria and have his power restored.
The United States 16th president was Abraham Lincoln.
In the case,Texas v.Johnson,the texas court tried and convicted Mr.Johnson for violating the statute that prohibited the desecration of venerated objects e.g the American flag that could arouse anger in other individuals.Johnson appealed with the argument that the actions were a "symbolic speech" protected by the First Amendment.
Texas laws punishes actions such as flag burning that might arouse anger in other but it this case the outrage alone couldnot justify for supressing Johnson's freedom of speech.In this perspective,the Texas law discriminated upon view point in that though it punishes such actions,it still specifically exempt prosecution of actions with similar defination such as burning or burying of worn-out flag.
Therefore, flag burning in Texas v.Johnson constituted a symbolic speech and is protected by the Firts Amendment.
He opposed it because he felt that it made the rich get richer and since he favored the common people and felt that it wasn't fair toward the common people .