It was certainly very offensive and cruel remarks made by the young man and many people no doubt would agree that he should be punished but 56 days in prison is quite ludicrous given that young violent offenders guilty of beating someone almost to a pulp for no apparent reason can escape a custodial sentence.
The public should rightly be concerned when a judicial system considers the use of words to be a more serious offence than physical actions against a victim.

It is also interesting to note that his reported remarks could hardy be called 'incitement', they were merely statements. To my knowledge he was not stirring up racial hatred which the legal act was designed to deal with.

The Racial and Religious Hatred Act had many high profile actors, writers and comedians (Rowan Atkinson) who lobbied parliament to oppose the bill mainly on the religious aspect on restricting artists from using religion in a critical way. Therefore the offence of using insulting language was dropped from the Act.

I doubt very much that there will a national outcry over this young man's sentencing although i believe it to be very similar to his outburst, manifestly irrational.