I instantly got the feeling to compare it American History X, as Heart of a Lion was presented with a similar premise. Heart of a Lion, however, focuses a lot more on the relationship between the two characters, rather than (mostly) one character having an existential crisis.
The beginging was a bit odd and boring. The relationship with the main character and his future girlfriend felt very awkward and unrelatable. I just kept thinking why on Earth would she want to be with him, and the chemistry felt forced. The chemistries and relationships between the main character and the kid and the brother were a lot better, great even. Those and the acting was really what carried the movie. Otherwise it could have been better.
The neo-Nazi group as well as the plot in general and its events were all very unconvincing and unbelievable, as in unrealistic and over-the-top. Seven guys coming to beat one guy up just because their kid's shirt was stolen at school? Things like that really broke the immersion. All the other characters aside from the three main characters felt over-exaggerated caricatures and stereotypes.
Despite its flaws, the movie still managed to be emotional and after the first twenty minutes the pacing and directing were good. Acting was great and overall the movie was okay.
