It does seem an over-reaction for Rubiales to be facing criminal charges, but in the aftermath of the "wolf pack" case, when a gang rape was originally downgraded to sexual abuse, perhaps not so much. In that context, I can see why people would want Rubiales taught that the kiss, which he claims was spontaneous but that he also asked for permission first (some contradiction there, I think), was not appropriate or making out (I suspect falsely) that it was consensual. The possibility of him being thrown in jail for it does seem a bit much, though.
Spain wants Rubiales kiss row to be 'MeToo moment'
Among the most vocal critics of Mr Rubiales has been Irene Montero, minister of equality and the most visible promoter of the government's feminist agenda. She was also the driving force behind the "Only yes means yes" law, which sought to clamp down on non-consensual sexual relations.
That controversial legislation was driven in great part by the gang rape of a young woman in Pamplona during the San Fermines festival in 2016, in a case which became known as "The Wolfpack". The five men responsible were only initially found guilty of sexual abuse, rather than rape (before their sentences were revised up).
The social backlash that followed the initial verdict not only contributed to a change in the law, but it also appeared to shift attitudes in Spain to consent in sexual relations.
Spain women: Top court rules Wolf Pack gang were rapists