https://libapps.salisbury.edu/nabb-online/exhibits/show/propaganda/fear/red-scare
Personally, I'm reassured by the arguments that we can dismiss a majority of dehumanising political propaganda as "not to be taken seriously". See the site I link above, for example - or, indeed, much of this delightful genre throughout history. If you do find you struggle as you scroll through any, then Christinapple's words, echoed below, should offer considerable reassurance.
You'll notice that many, thankfully, are quite badly drawn.
Others such as the uniformed vulture I link directly to, would have raised considerable logistics and practicality. After all, how would one get it to wear the cap? and what if it didn't want to pounce on a skull?
In summary, the people of the time really shouldn't have taken any of them credible - regardless of whether they were supposedly being "targetted" at.
(Alternatively, we could unite in condemning all instances of dehumanising propaganda - whether or not they happen to align with our personal perspectives and/or prejudices - as reflecting some of the very worst instincts of humanity).