<human>: My uncle has always been making fun of me especially of my insecurities, purposefully trying to hurt me. Everyone else in the family has been laughing it off because he's "just joking" and "I'm easily butthurt". I hadn't let his comments get under my skin untill now, however I recently made a very important choice regarding my high school education that is really important for me and even thought I have full suport from my parents my uncle disagrees. 

Ever since my uncle was told about my plans, he has been making degrading and hurtful comments about myself, often implying im lazy and act against the intrests of my country, but also regarding the organization itself. I find it very hurtful and angering having to live up to everyones expectations, exausting myself and then being told that all of my work worths nothing.

My [49F] mother even though she supports my decision and claims to be proud of me, alows her brother to make these comments even in front of others even after me explaining how I feel about this issue. My uncle can easily convince and manipulate my mother, she trusts him and always takes his side. However the only way I can make him stop is by convincing my mother to ask him to stop, this technique has worked in the past, only problem is that mom dosn't see anything wrong with his behaviour.

So tell me Reddit, how do I address this issue?

Can you condense the text into a few key points?
<bot>: Uncle makes fun of things that are improtant for me  purposefully, I don't have any backup, how do I make him stop?