IMO it depends on if you are interested in the language or culture, or if you plan to be in contact with Russia or Russians. For example, do you plan to translate Russian? Do you plan to read Russian-language literature?

Will that be offensive?

Bigots deserve to be offended.

Many people HATE Russia and the language.

Not your problem if people are prejudiced against Russians for the actions of the government that lords over them. If you want to learn the language, go for it.