I find the combination of street photography, parades and cosplay lend themselves very well to monochrome. Different cosplays and their details tend to stand out more, I also like the editorial feel to the images as it rally helps take me back to the event itself.
Nikon D750 1/250 sec f/4.5 ISO-160 at 86mm
Nikon D750 1/250 sec f/5 ISO-160 at 165mm
Nikon D750 1/250 sec f/4.5 ISO-160 at 70mm
Nikon D750 1/250 sec f/4.5 ISO-160 at 70mm
Nikon D750 1/640 sec f/9 ISO-160 at 82mm