You understood neither the original term "scab", as short for "scab worker", which is a derogatory term for strikebreaker, nor the use in this context as a meta

You understood neither the original term "scab", as short for "scab worker", which is a derogatory term for strikebreaker, nor the use in this context as a metaphor, in this case likely meaning for people willing to work at cut-rate wage to replace a worker who thinks those wages are unjust. For example, originally "carpetbagger" was used specifically for a Northern who went the South after the US Civil war, and were seen as doing so to advance personal power or profits. It's since acquired a much broader, though still pejorative, meaning. Since you don't have much experience with the term, you might need to research more about how it's used in the broader context. Some strikes in STEM fields include the Boeing machinists strike of 2008 by the Society of Professional Engineering Employees in Aerospace, the 2007 United Space Alliance strike by members of the International Association of Machinists and Aerospace Workers, and the 2015 WCAU Photographers and Camera Operators Strike by the International Brotherhood of Electrical Workers. Probably the most famous STEM strike in the US is the air traffic controller strike by PATCO in 1981. For smaller examples just from 2015, here's a partial strike by medical physicists in Australia - http://www.nzdoctor.co.nz/un-doctored/2015/june-2015/02/Medical-physicists-intensify-strike-action.aspx http://www.nzdoctor.co.nz/un-doctored/2015/june-2015/02/Medi... . Here's a strike by medical doctors at University of California campuses in Southern California - http://www.latimes.com/local/lanow/la-me-ln-doctors-strike-uc-20150411-story.html http://www.latimes.com/local/lanow/la-me-ln-doctors-strike-u... . Here's a programmer strike in India - http://timesofindia.indiatimes.com/city/kozhikode/Computer-programmers-strike-hits-CU-admissions/articleshow/47476998.cms http://timesofindia.indiatimes.com/city/kozhikode/Computer-p... .