newaccount3574
Your samples are biased there. If you are already looking at alt-right tweets then obviously you will see more trump- and nazi-related pepes.
If you look anywhere else then pepe is just another highly versatile meme.
/pol/ also shopped MAGA cap onto various anime characters. Momiji inubashiri being particularly popular, probably because she already wears a red hat in her canonical design. Does that mean those anime characters themselves symbolize hate or even conservatism? I think not.
It just means that outside observers are not familiar with memetic mutation.
It's not just for political speech. Multiple asian artists drawing cartoon porn, which was properly marked as sensitive content, got their twitter accounts suspended after some offended people mass-reported them.