Learn Spanish (Latin America): Al fin y al cabo, la libertad tiene consecuencias.

Literally, it translates to "at the end and at the end" (cabo refers to an extremity or the tail end of something). In this sentence, it functions as a conclusive discourse marker meaning "after all" or "at the end of the day," used to introduce an ultimate truth or a final justification.

Could I use en definitiva in this sentence instead?

Yes, you could say En definitiva, la libertad tiene consecuencias. Both are conclusive markers, though they carry a slight nuance. Al fin y al cabo feels more like a justification ("after all" or "at the end of the day"), while en definitiva feels slightly more like a definitive summary ("in short" or "ultimately").

Can I move al fin y al cabo to the end of the sentence, just like we do with "after all" in English?

Yes! You can absolutely say La libertad tiene consecuencias, al fin y al cabo. Placing it at the beginning, as done here, is simply a stylistic choice that immediately sets a summarizing, reflective tone for the rest of the thought.

Why do we need la before libertad when the English translation is just "freedom"?

This is a great refresher rule: in Spanish, abstract nouns like libertad (freedom), amor (love), or justicia (justice) require a definite article when they are the subject of a sentence or when you are talking about them in a broad, universal sense.